Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Small conflict around locking in rxrpc_process_event() -
channel_lock moved to bundle in next, while state lock
needs _bh() from net.

Signed-off-by: Jakub Kicinski <[e-mail]>

MAINTAINERS

···
 F:	drivers/amba/
 F:	include/linux/amba/bus.h
 
+ARM PRIMECELL CLCD PL110 DRIVER
+M:	Russell King <[e-mail]>
+S:	Odd Fixes
+F:	drivers/video/fbdev/amba-clcd.*
+
 ARM PRIMECELL KMI PL050 DRIVER
 M:	Russell King <[e-mail]>
 S:	Odd Fixes

arch/arm/xen/enlighten.c

···
 	pr_info("Xen: initializing cpu%d\n", cpu);
 	vcpup = per_cpu_ptr(xen_vcpu_info, cpu);
 
-	info.mfn = virt_to_gfn(vcpup);
+	info.mfn = percpu_to_gfn(vcpup);
 	info.offset = xen_offset_in_page(vcpup);
 
 	err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, xen_vcpu_nr(cpu),

arch/arm64/crypto/aes-neonbs-core.S

···
 
 0:	mov		bskey, x21
 	mov		rounds, x22
-	br		x7
+	br		x16
 SYM_FUNC_END(__xts_crypt8)
 
 	.macro		__xts_crypt, do8, o0, o1, o2, o3, o4, o5, o6, o7
···
 	uzp1		v30.4s, v30.4s, v25.4s
 	ld1		{v25.16b}, [x24]
 
-99:	adr		x7, \do8
+99:	adr		x16, \do8
 	bl		__xts_crypt8
 
 	ldp		q16, q17, [sp, #.Lframe_local_offset]

drivers/gpu/drm/nouveau/nouveau_mem.c

···
 nouveau_mem_del(struct ttm_mem_reg *reg)
 {
 	struct nouveau_mem *mem = nouveau_mem(reg);
+	if (!mem)
+		return;
 	nouveau_mem_fini(mem);
 	kfree(reg->mm_node);
 	reg->mm_node = NULL;

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

···
 		case 0x168: device->chip = &nv168_chipset; break;
 		default:
 			nvdev_error(device, "unknown chipset (%08x)\n", boot0);
+			ret = -ENODEV;
 			goto done;
 		}
 

drivers/net/dsa/ocelot/felix_vsc9959.c

···
  */
 static u16 vsc9959_wm_enc(u16 value)
 {
+	WARN_ON(value >= 16 * BIT(8));
+
 	if (value >= BIT(8))
 		return BIT(8) | (value / 16);
 

drivers/net/dsa/ocelot/seville_vsc9953.c

···
  */
 static u16 vsc9953_wm_enc(u16 value)
 {
+	WARN_ON(value >= 16 * BIT(9));
+
 	if (value >= BIT(9))
 		return BIT(9) | (value / 16);
 

drivers/net/ethernet/mscc/ocelot.c

···
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
 	int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN;
 	int pause_start, pause_stop;
-	int atop_wm;
+	int atop, atop_tot;
 
 	if (port == ocelot->npi) {
 		maxlen += OCELOT_TAG_LEN;
···
 	ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_STOP,
 			    pause_stop);
 
-	/* Tail dropping watermark */
-	atop_wm = (ocelot->shared_queue_sz - 9 * maxlen) /
+	/* Tail dropping watermarks */
+	atop_tot = (ocelot->shared_queue_sz - 9 * maxlen) /
 		   OCELOT_BUFFER_CELL_SZ;
-	ocelot_write_rix(ocelot, ocelot->ops->wm_enc(9 * maxlen),
-			 SYS_ATOP, port);
-	ocelot_write(ocelot, ocelot->ops->wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
+	atop = (9 * maxlen) / OCELOT_BUFFER_CELL_SZ;
+	ocelot_write_rix(ocelot, ocelot->ops->wm_enc(atop), SYS_ATOP, port);
+	ocelot_write(ocelot, ocelot->ops->wm_enc(atop_tot), SYS_ATOP_TOT_CFG);
 }
 EXPORT_SYMBOL(ocelot_port_set_maxlen);
 

drivers/net/ethernet/mscc/ocelot_vsc7514.c

···
  */
 static u16 ocelot_wm_enc(u16 value)
 {
+	WARN_ON(value >= 16 * BIT(8));
+
 	if (value >= BIT(8))
 		return BIT(8) | (value / 16);
 

drivers/net/ethernet/realtek/r8169_main.c

···
 
 void r8169_apply_firmware(struct rtl8169_private *tp)
 {
+	int val;
+
 	/* TODO: release firmware if rtl_fw_write_firmware signals failure. */
 	if (tp->rtl_fw) {
 		rtl_fw_write_firmware(tp, tp->rtl_fw);
 		/* At least one firmware doesn't reset tp->ocp_base. */
 		tp->ocp_base = OCP_STD_PHY_BASE;
+
+		/* PHY soft reset may still be in progress */
+		phy_read_poll_timeout(tp->phydev, MII_BMCR, val,
+				      !(val & BMCR_RESET),
+				      50000, 600000, true);
 	}
 }
 

drivers/net/macsec.c

···
 	struct macsec_rx_sa *rx_sa;
 	struct macsec_rxh_data *rxd;
 	struct macsec_dev *macsec;
+	unsigned int len;
 	sci_t sci;
 	u32 hdr_pn;
 	bool cbit;
···
 	macsec_rxsc_put(rx_sc);
 
 	skb_orphan(skb);
+	len = skb->len;
 	ret = gro_cells_receive(&macsec->gro_cells, skb);
 	if (ret == NET_RX_SUCCESS)
-		count_rx(dev, skb->len);
+		count_rx(dev, len);
 	else
 		macsec->secy.netdev->stats.rx_dropped++;
 

drivers/net/usb/qmi_wwan.c

···
 	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)},	/* Fibocom NL678 series */
 	{QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},	/* Foxconn T77W968 LTE */
 	{QMI_FIXED_INTF(0x0489, 0xe0b5, 0)},	/* Foxconn T77W968 LTE with eSIM support*/
+	{QMI_FIXED_INTF(0x2692, 0x9025, 4)},    /* Cellient MPL200 (rebranded Qualcomm 05c6:9025) */
 
 	/* 4. Gobi 1000 devices */
 	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */

drivers/net/usb/rtl8150.c

···
 		return 1;
 }
 
-static inline void set_ethernet_addr(rtl8150_t * dev)
+static void set_ethernet_addr(rtl8150_t *dev)
 {
-	u8 node_id[6];
+	u8 node_id[ETH_ALEN];
+	int ret;
 
-	get_registers(dev, IDR, sizeof(node_id), node_id);
-	memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
+	ret = get_registers(dev, IDR, sizeof(node_id), node_id);
+
+	if (ret == sizeof(node_id)) {
+		ether_addr_copy(dev->netdev->dev_addr, node_id);
+	} else {
+		eth_hw_addr_random(dev->netdev);
+		netdev_notice(dev->netdev, "Assigned a random MAC address: %pM\n",
+			      dev->netdev->dev_addr);
+	}
 }
 
 static int rtl8150_set_mac_address(struct net_device *netdev, void *p)

drivers/platform/x86/asus-nb-wmi.c

···
 	.wmi_backlight_set_devstate = true,
 };
 
+static struct quirk_entry quirk_asus_use_kbd_dock_devid = {
+	.use_kbd_dock_devid = true,
+};
+
 static int dmi_matched(const struct dmi_system_id *dmi)
 {
 	pr_info("Identified laptop model '%s'\n", dmi->ident);
···
 			DMI_MATCH(DMI_PRODUCT_NAME, "GA502IV"),
 		},
 		.driver_data = &quirk_asus_vendor_backlight,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "Asus Transformer T100TA / T100HA / T100CHI",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			/* Match *T100* */
+			DMI_MATCH(DMI_PRODUCT_NAME, "T100"),
+		},
+		.driver_data = &quirk_asus_use_kbd_dock_devid,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "Asus Transformer T101HA",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "T101HA"),
+		},
+		.driver_data = &quirk_asus_use_kbd_dock_devid,
+	},
+	{
+		.callback = dmi_matched,
+		.ident = "Asus Transformer T200TA",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "T200TA"),
+		},
+		.driver_data = &quirk_asus_use_kbd_dock_devid,
 	},
 	{},
 };

drivers/platform/x86/asus-wmi.c

···
 	if (err)
 		goto err_free_dev;
 
-	result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
-	if (result >= 0) {
-		input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
-		input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
-	} else if (result != -ENODEV) {
-		pr_err("Error checking for keyboard-dock: %d\n", result);
+	if (asus->driver->quirks->use_kbd_dock_devid) {
+		result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_KBD_DOCK);
+		if (result >= 0) {
+			input_set_capability(asus->inputdev, EV_SW, SW_TABLET_MODE);
+			input_report_switch(asus->inputdev, SW_TABLET_MODE, !result);
+		} else if (result != -ENODEV) {
+			pr_err("Error checking for keyboard-dock: %d\n", result);
+		}
 	}
 
 	err = input_register_device(asus->inputdev);
···
 		return;
 	}
 
-	if (code == NOTIFY_KBD_DOCK_CHANGE) {
+	if (asus->driver->quirks->use_kbd_dock_devid && code == NOTIFY_KBD_DOCK_CHANGE) {
 		result = asus_wmi_get_devstate_simple(asus,
 						      ASUS_WMI_DEVID_KBD_DOCK);
 		if (result >= 0) {

drivers/platform/x86/asus-wmi.h

···
 	bool wmi_backlight_native;
 	bool wmi_backlight_set_devstate;
 	bool wmi_force_als_set;
+	bool use_kbd_dock_devid;
 	int wapf;
 	/*
 	 * For machines with AMD graphic chips, it will send out WMI event

drivers/vdpa/Kconfig

···
 	  be called ifcvf.
 
 config MLX5_VDPA
-	bool "MLX5 VDPA support library for ConnectX devices"
-	depends on MLX5_CORE
-	default n
+	bool
 	help
 	  Support library for Mellanox VDPA drivers. Provides code that is
 	  common for all types of VDPA drivers. The following drivers are planned:
···
 
 config MLX5_VDPA_NET
 	tristate "vDPA driver for ConnectX devices"
-	depends on MLX5_VDPA
+	select MLX5_VDPA
+	depends on MLX5_CORE
 	default n
 	help
 	  VDPA network driver for ConnectX6 and newer. Provides offloading

drivers/vdpa/mlx5/net/mlx5_vnet.c

···
 	if (!mvq->initialized)
 		return;
 
-	if (query_virtqueue(ndev, mvq, &attr)) {
-		mlx5_vdpa_warn(&ndev->mvdev, "failed to query virtqueue\n");
-		return;
-	}
 	if (mvq->fw_state != MLX5_VIRTIO_NET_Q_OBJECT_STATE_RDY)
 		return;
 
 	if (modify_virtqueue(ndev, mvq, MLX5_VIRTIO_NET_Q_OBJECT_STATE_SUSPEND))
 		mlx5_vdpa_warn(&ndev->mvdev, "modify to suspend failed\n");
+
+	if (query_virtqueue(ndev, mvq, &attr)) {
+		mlx5_vdpa_warn(&ndev->mvdev, "failed to query virtqueue\n");
+		return;
+	}
+	mvq->avail_idx = attr.available_index;
 }
 
 static void suspend_vqs(struct mlx5_vdpa_net *ndev)
···
 	struct mlx5_virtq_attr attr;
 	int err;
 
-	if (!mvq->initialized)
-		return -EAGAIN;
+	/* If the virtq object was destroyed, use the value saved at
+	 * the last minute of suspend_vq. This caters for userspace
+	 * that cares about emulating the index after vq is stopped.
+	 */
+	if (!mvq->initialized) {
+		state->avail_index = mvq->avail_idx;
+		return 0;
+	}
 
 	err = query_virtqueue(ndev, mvq, &attr);
 	if (err) {

drivers/vhost/vdpa.c

···
 			      perm_to_iommu_flags(perm));
 	}
 
+	if (r)
+		vhost_iotlb_del_range(dev->iotlb, iova, iova + size - 1);
+
 	return r;
 }
 
···
 	struct vhost_dev *dev = &v->vdev;
 	struct vhost_iotlb *iotlb = dev->iotlb;
 	struct page **page_list;
-	unsigned long list_size = PAGE_SIZE / sizeof(struct page *);
+	struct vm_area_struct **vmas;
 	unsigned int gup_flags = FOLL_LONGTERM;
-	unsigned long npages, cur_base, map_pfn, last_pfn = 0;
-	unsigned long locked, lock_limit, pinned, i;
+	unsigned long map_pfn, last_pfn = 0;
+	unsigned long npages, lock_limit;
+	unsigned long i, nmap = 0;
 	u64 iova = msg->iova;
+	long pinned;
 	int ret = 0;
 
 	if (vhost_iotlb_itree_first(iotlb, msg->iova,
 				    msg->iova + msg->size - 1))
 		return -EEXIST;
-
-	page_list = (struct page **) __get_free_page(GFP_KERNEL);
-	if (!page_list)
-		return -ENOMEM;
 
 	if (msg->perm & VHOST_ACCESS_WO)
 		gup_flags |= FOLL_WRITE;
···
 	if (!npages)
 		return -EINVAL;
 
+	page_list = kvmalloc_array(npages, sizeof(struct page *), GFP_KERNEL);
+	vmas = kvmalloc_array(npages, sizeof(struct vm_area_struct *),
+			      GFP_KERNEL);
+	if (!page_list || !vmas) {
+		ret = -ENOMEM;
+		goto free;
+	}
+
 	mmap_read_lock(dev->mm);
 
-	locked = atomic64_add_return(npages, &dev->mm->pinned_vm);
 	lock_limit = rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT;
-
-	if (locked > lock_limit) {
+	if (npages + atomic64_read(&dev->mm->pinned_vm) > lock_limit) {
 		ret = -ENOMEM;
-		goto out;
+		goto unlock;
 	}
 
-	cur_base = msg->uaddr & PAGE_MASK;
-	iova &= PAGE_MASK;
-
-	while (npages) {
-		pinned = min_t(unsigned long, npages, list_size);
-		ret = pin_user_pages(cur_base, pinned,
-				     gup_flags, page_list, NULL);
-		if (ret != pinned)
-			goto out;
-
-		if (!last_pfn)
-			map_pfn = page_to_pfn(page_list[0]);
-
-		for (i = 0; i < ret; i++) {
-			unsigned long this_pfn = page_to_pfn(page_list[i]);
-			u64 csize;
-
-			if (last_pfn && (this_pfn != last_pfn + 1)) {
-				/* Pin a contiguous chunk of memory */
-				csize = (last_pfn - map_pfn + 1) << PAGE_SHIFT;
-				if (vhost_vdpa_map(v, iova, csize,
-						   map_pfn << PAGE_SHIFT,
-						   msg->perm))
-					goto out;
-				map_pfn = this_pfn;
-				iova += csize;
-			}
-
-			last_pfn = this_pfn;
+	pinned = pin_user_pages(msg->uaddr & PAGE_MASK, npages, gup_flags,
+				page_list, vmas);
+	if (npages != pinned) {
+		if (pinned < 0) {
+			ret = pinned;
+		} else {
+			unpin_user_pages(page_list, pinned);
+			ret = -ENOMEM;
 		}
-
-		cur_base += ret << PAGE_SHIFT;
-		npages -= ret;
+		goto unlock;
 	}
 
-	/* Pin the rest chunk */
-	ret = vhost_vdpa_map(v, iova, (last_pfn - map_pfn + 1) << PAGE_SHIFT,
-			     map_pfn << PAGE_SHIFT, msg->perm);
+	iova &= PAGE_MASK;
+	map_pfn = page_to_pfn(page_list[0]);
+
+	/* One more iteration to avoid extra vdpa_map() call out of loop. */
+	for (i = 0; i <= npages; i++) {
+		unsigned long this_pfn;
+		u64 csize;
+
+		/* The last chunk may have no valid PFN next to it */
+		this_pfn = i < npages ? page_to_pfn(page_list[i]) : -1UL;
+
+		if (last_pfn && (this_pfn == -1UL ||
+				 this_pfn != last_pfn + 1)) {
+			/* Pin a contiguous chunk of memory */
+			csize = last_pfn - map_pfn + 1;
+			ret = vhost_vdpa_map(v, iova, csize << PAGE_SHIFT,
+					     map_pfn << PAGE_SHIFT,
+					     msg->perm);
+			if (ret) {
+				/*
+				 * Unpin the rest chunks of memory on the
+				 * flight with no corresponding vdpa_map()
+				 * calls having been made yet. On the other
+				 * hand, vdpa_unmap() in the failure path
+				 * is in charge of accounting the number of
+				 * pinned pages for its own.
+				 * This asymmetrical pattern of accounting
+				 * is for efficiency to pin all pages at
+				 * once, while there is no other callsite
+				 * of vdpa_map() than here above.
+				 */
+				unpin_user_pages(&page_list[nmap],
+						 npages - nmap);
+				goto out;
+			}
+			atomic64_add(csize, &dev->mm->pinned_vm);
+			nmap += csize;
+			iova += csize << PAGE_SHIFT;
+			map_pfn = this_pfn;
+		}
+		last_pfn = this_pfn;
+	}
+
+	WARN_ON(nmap != npages);
 out:
-	if (ret) {
+	if (ret)
 		vhost_vdpa_unmap(v, msg->iova, msg->size);
-		atomic64_sub(npages, &dev->mm->pinned_vm);
-	}
+unlock:
 	mmap_read_unlock(dev->mm);
-	free_page((unsigned long)page_list);
+free:
+	kvfree(vmas);
+	kvfree(page_list);
 	return ret;
 }
 
···
 
 err_init_iotlb:
 	vhost_dev_cleanup(&v->vdev);
+	kfree(vqs);
 err:
 	atomic_dec(&v->opened);
 	return r;

drivers/vhost/vhost.c

···
 			 vring_used_t __user *used)
 
 {
+	/* If an IOTLB device is present, the vring addresses are
+	 * GIOVAs. Access validation occurs at prefetch time. */
+	if (vq->iotlb)
+		return true;
+
 	return access_ok(desc, vhost_get_desc_size(vq, num)) &&
 	       access_ok(avail, vhost_get_avail_size(vq, num)) &&
 	       access_ok(used, vhost_get_used_size(vq, num));
···
 }
 EXPORT_SYMBOL_GPL(vhost_log_access_ok);
 
+static bool vq_log_used_access_ok(struct vhost_virtqueue *vq,
+				  void __user *log_base,
+				  bool log_used,
+				  u64 log_addr)
+{
+	/* If an IOTLB device is present, log_addr is a GIOVA that
+	 * will never be logged by log_used(). */
+	if (vq->iotlb)
+		return true;
+
+	return !log_used || log_access_ok(log_base, log_addr,
+					  vhost_get_used_size(vq, vq->num));
+}
+
 /* Verify access for write logging. */
 /* Caller should have vq mutex and device mutex */
 static bool vq_log_access_ok(struct vhost_virtqueue *vq,
···
 {
 	return vq_memory_access_ok(log_base, vq->umem,
 				   vhost_has_feature(vq, VHOST_F_LOG_ALL)) &&
-		(!vq->log_used || log_access_ok(log_base, vq->log_addr,
-				  vhost_get_used_size(vq, vq->num)));
+		vq_log_used_access_ok(vq, log_base, vq->log_used, vq->log_addr);
 }
 
 /* Can we start vq? */
···
 {
 	if (!vq_log_access_ok(vq, vq->log_base))
 		return false;
-
-	/* Access validation occurs at prefetch time with IOTLB */
-	if (vq->iotlb)
-		return true;
 
 	return vq_access_ok(vq, vq->num, vq->desc, vq->avail, vq->used);
 }
···
 			return -EINVAL;
 
 		/* Also validate log access for used ring if enabled. */
-		if ((a.flags & (0x1 << VHOST_VRING_F_LOG)) &&
-			!log_access_ok(vq->log_base, a.log_guest_addr,
-				sizeof *vq->used +
-				vq->num * sizeof *vq->used->ring))
+		if (!vq_log_used_access_ok(vq, vq->log_base,
+				a.flags & (0x1 << VHOST_VRING_F_LOG),
+				a.log_guest_addr))
 			return -EINVAL;
 	}
 

drivers/video/console/newport_con.c

···
 
 #define FONT_DATA ((unsigned char *)font_vga_8x16.data)
 
-/* borrowed from fbcon.c */
-#define REFCOUNT(fd)	(((int *)(fd))[-1])
-#define FNTSIZE(fd)	(((int *)(fd))[-2])
-#define FNTCHARCNT(fd)	(((int *)(fd))[-3])
-#define FONT_EXTRA_WORDS 3
-
 static unsigned char *font_data[MAX_NR_CONSOLES];
 
 static struct newport_regs *npregs;
···
 	FNTSIZE(new_data) = size;
 	FNTCHARCNT(new_data) = op->charcount;
 	REFCOUNT(new_data) = 0;	/* usage counter */
+	FNTSUM(new_data) = 0;
 
 	p = new_data;
 	for (i = 0; i < op->charcount; i++) {

drivers/video/fbdev/Kconfig

···
 	help
 	  Support the Permedia2 FIFO disconnect feature.
 
+config FB_ARMCLCD
+	tristate "ARM PrimeCell PL110 support"
+	depends on ARM || ARM64 || COMPILE_TEST
+	depends on FB && ARM_AMBA && HAS_IOMEM
+	select FB_CFB_FILLRECT
+	select FB_CFB_COPYAREA
+	select FB_CFB_IMAGEBLIT
+	select FB_MODE_HELPERS if OF
+	select VIDEOMODE_HELPERS if OF
+	select BACKLIGHT_CLASS_DEVICE if OF
+	help
+	  This framebuffer device driver is for the ARM PrimeCell PL110
+	  Colour LCD controller.  ARM PrimeCells provide the building
+	  blocks for System on a Chip devices.
+
+	  If you want to compile this as a module (=code which can be
+	  inserted into and removed from the running kernel), say M
+	  here and read <file:Documentation/kbuild/modules.rst>.  The module
+	  will be called amba-clcd.
+
 config FB_ACORN
 	bool "Acorn VIDC support"
 	depends on (FB = y) && ARM && ARCH_ACORN

drivers/video/fbdev/Makefile

···
 obj-$(CONFIG_FB_ATMEL)		  += atmel_lcdfb.o
 obj-$(CONFIG_FB_PVR2)             += pvr2fb.o
 obj-$(CONFIG_FB_VOODOO1)          += sstfb.o
+obj-$(CONFIG_FB_ARMCLCD)	  += amba-clcd.o
 obj-$(CONFIG_FB_GOLDFISH)         += goldfishfb.o
 obj-$(CONFIG_FB_68328)            += 68328fb.o
 obj-$(CONFIG_FB_GBE)              += gbefb.o

drivers/video/fbdev/amba-clcd.c

···
+/*
+ *  linux/drivers/video/amba-clcd.c
+ *
+ * Copyright (C) 2001 ARM Limited, by David A Rusling
+ * Updated to 2.5, Deep Blue Solutions Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ *
+ *  ARM PrimeCell PL110 Color LCD Controller
+ */
+#include <linux/amba/bus.h>
+#include <linux/amba/clcd.h>
+#include <linux/backlight.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_graph.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <video/display_timing.h>
+#include <video/of_display_timing.h>
+#include <video/videomode.h>
+
+#define to_clcd(info)	container_of(info, struct clcd_fb, fb)
+
+/* This is limited to 16 characters when displayed by X startup */
+static const char *clcd_name = "CLCD FB";
+
+/*
+ * Unfortunately, the enable/disable functions may be called either from
+ * process or IRQ context, and we _need_ to delay.  This is _not_ good.
+ */
+static inline void clcdfb_sleep(unsigned int ms)
+{
+	if (in_atomic()) {
+		mdelay(ms);
+	} else {
+		msleep(ms);
+	}
+}
+
+static inline void clcdfb_set_start(struct clcd_fb *fb)
+{
+	unsigned long ustart = fb->fb.fix.smem_start;
+	unsigned long lstart;
+
+	ustart += fb->fb.var.yoffset * fb->fb.fix.line_length;
+	lstart = ustart + fb->fb.var.yres * fb->fb.fix.line_length / 2;
+
+	writel(ustart, fb->regs + CLCD_UBAS);
+	writel(lstart, fb->regs + CLCD_LBAS);
+}
+
+static void clcdfb_disable(struct clcd_fb *fb)
+{
+	u32 val;
+
+	if (fb->board->disable)
+		fb->board->disable(fb);
+
+	if (fb->panel->backlight) {
+		fb->panel->backlight->props.power = FB_BLANK_POWERDOWN;
+		backlight_update_status(fb->panel->backlight);
+	}
+
+	val = readl(fb->regs + fb->off_cntl);
+	if (val & CNTL_LCDPWR) {
+		val &= ~CNTL_LCDPWR;
+		writel(val, fb->regs + fb->off_cntl);
+
+		clcdfb_sleep(20);
+	}
+	if (val & CNTL_LCDEN) {
+		val &= ~CNTL_LCDEN;
+		writel(val, fb->regs + fb->off_cntl);
+	}
+
+	/*
+	 * Disable CLCD clock source.
+	 */
+	if (fb->clk_enabled) {
+		fb->clk_enabled = false;
+		clk_disable(fb->clk);
+	}
+}
+
+static void clcdfb_enable(struct clcd_fb *fb, u32 cntl)
+{
+	/*
+	 * Enable the CLCD clock source.
+	 */
+	if (!fb->clk_enabled) {
+		fb->clk_enabled = true;
+		clk_enable(fb->clk);
+	}
+
+	/*
+	 * Bring up by first enabling..
+	 */
+	cntl |= CNTL_LCDEN;
+	writel(cntl, fb->regs + fb->off_cntl);
+
+	clcdfb_sleep(20);
+
+	/*
+	 * and now apply power.
+	 */
+	cntl |= CNTL_LCDPWR;
+	writel(cntl, fb->regs + fb->off_cntl);
+
+	/*
+	 * Turn on backlight
+	 */
+	if (fb->panel->backlight) {
+		fb->panel->backlight->props.power = FB_BLANK_UNBLANK;
+		backlight_update_status(fb->panel->backlight);
+	}
+
+	/*
+	 * finally, enable the interface.
+	 */
+	if (fb->board->enable)
+		fb->board->enable(fb);
+}
+
+static int
+clcdfb_set_bitfields(struct clcd_fb *fb, struct fb_var_screeninfo *var)
+{
+	u32 caps;
+	int ret = 0;
+
+	if (fb->panel->caps && fb->board->caps)
+		caps = fb->panel->caps & fb->board->caps;
+	else {
+		/* Old way of specifying what can be used */
+		caps = fb->panel->cntl & CNTL_BGR ?
+			CLCD_CAP_BGR : CLCD_CAP_RGB;
+		/* But mask out 444 modes as they weren't supported */
+		caps &= ~CLCD_CAP_444;
+	}
+
+	/* Only TFT panels can do RGB888/BGR888 */
+	if (!(fb->panel->cntl & CNTL_LCDTFT))
+		caps &= ~CLCD_CAP_888;
+
+	memset(&var->transp, 0, sizeof(var->transp));
+
+	var->red.msb_right = 0;
+	var->green.msb_right = 0;
+	var->blue.msb_right = 0;
+
+	switch (var->bits_per_pixel) {
+	case 1:
+	case 2:
+	case 4:
+	case 8:
+		/* If we can't do 5551, reject */
+		caps &= CLCD_CAP_5551;
+		if (!caps) {
+			ret = -EINVAL;
+			break;
+		}
+
+		var->red.length		= var->bits_per_pixel;
+		var->red.offset		= 0;
+		var->green.length	= var->bits_per_pixel;
+		var->green.offset	= 0;
+		var->blue.length	= var->bits_per_pixel;
+		var->blue.offset	= 0;
+		break;
+
+	case 16:
+		/* If we can't do 444, 5551 or 565, reject */
+		if (!(caps & (CLCD_CAP_444 | CLCD_CAP_5551 | CLCD_CAP_565))) {
+			ret = -EINVAL;
+			break;
+		}
+
+		/*
+		 * Green length can be 4, 5 or 6 depending whether
+		 * we're operating in 444, 5551 or 565 mode.
+		 */
+		if (var->green.length == 4 && caps & CLCD_CAP_444)
+			caps &= CLCD_CAP_444;
+		if (var->green.length == 5 && caps & CLCD_CAP_5551)
+			caps &= CLCD_CAP_5551;
+		else if (var->green.length == 6 && caps & CLCD_CAP_565)
+			caps &= CLCD_CAP_565;
+		else {
+			/*
+			 * PL110 officially only supports RGB555,
+			 * but may be wired up to allow RGB565.
+			 */
+			if (caps & CLCD_CAP_565) {
+				var->green.length = 6;
+				caps &= CLCD_CAP_565;
+			} else if (caps & CLCD_CAP_5551) {
+				var->green.length = 5;
+				caps &= CLCD_CAP_5551;
+			} else {
+				var->green.length = 4;
+				caps &= CLCD_CAP_444;
+			}
+		}
+
+		if (var->green.length >= 5) {
+			var->red.length = 5;
+			var->blue.length = 5;
+		} else {
+			var->red.length = 4;
+			var->blue.length = 4;
+		}
+		break;
+	case 32:
+		/* If we can't do 888, reject */
+		caps &= CLCD_CAP_888;
+		if (!caps) {
+			ret = -EINVAL;
+			break;
+		}
+
+		var->red.length = 8;
+		var->green.length = 8;
+		var->blue.length = 8;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	/*
+	 * >= 16bpp displays have separate colour component bitfields
+	 * encoded in the pixel data.  Calculate their position from
+	 * the bitfield length defined above.
+	 */
+	if (ret == 0 && var->bits_per_pixel >= 16) {
+		bool bgr, rgb;
+
+		bgr = caps & CLCD_CAP_BGR && var->blue.offset == 0;
+		rgb = caps & CLCD_CAP_RGB && var->red.offset == 0;
+
+		if (!bgr && !rgb)
+			/*
+			 * The requested format was not possible, try just
+			 * our capabilities.  One of BGR or RGB must be
+			 * supported.
+			 */
+			bgr = caps & CLCD_CAP_BGR;
+
+		if (bgr) {
+			var->blue.offset = 0;
+			var->green.offset = var->blue.offset + var->blue.length;
+			var->red.offset = var->green.offset + var->green.length;
+		} else {
+			var->red.offset = 0;
+			var->green.offset = var->red.offset + var->red.length;
+			var->blue.offset = var->green.offset + var->green.length;
+		}
+	}
+
+	return ret;
+}
+
+static int clcdfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+	struct clcd_fb *fb = to_clcd(info);
+	int ret = -EINVAL;
+
+	if (fb->board->check)
+		ret = fb->board->check(fb, var);
+
+	if (ret == 0 &&
+	    var->xres_virtual * var->bits_per_pixel / 8 *
+	    var->yres_virtual > fb->fb.fix.smem_len)
+		ret = -EINVAL;
+
+	if (ret == 0)
+		ret = clcdfb_set_bitfields(fb, var);
+
+	return ret;
+}
+
+static int clcdfb_set_par(struct fb_info *info)
+{
+	struct clcd_fb *fb = to_clcd(info);
+	struct clcd_regs regs;
+
+	fb->fb.fix.line_length = fb->fb.var.xres_virtual *
+				 fb->fb.var.bits_per_pixel / 8;
+
+	if (fb->fb.var.bits_per_pixel <= 8)
+		fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
+	else
+		fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
+
+	fb->board->decode(fb, &regs);
+
+	clcdfb_disable(fb);
+
+	writel(regs.tim0, fb->regs + CLCD_TIM0);
+	writel(regs.tim1, fb->regs + CLCD_TIM1);
+	writel(regs.tim2, fb->regs + CLCD_TIM2);
+	writel(regs.tim3, fb->regs + CLCD_TIM3);
+
+	clcdfb_set_start(fb);
+
+	clk_set_rate(fb->clk, (1000000000 / regs.pixclock) * 1000);
+
+	fb->clcd_cntl = regs.cntl;
+
+	clcdfb_enable(fb, regs.cntl);
+
+#ifdef DEBUG
+	printk(KERN_INFO
+	       "CLCD: Registers set to\n"
+	       "  %08x %08x %08x %08x\n"
+	       "  %08x %08x %08x %08x\n",
+		readl(fb->regs + CLCD_TIM0), readl(fb->regs + CLCD_TIM1),
+		readl(fb->regs + CLCD_TIM2), readl(fb->regs + CLCD_TIM3),
+		readl(fb->regs + CLCD_UBAS), readl(fb->regs + CLCD_LBAS),
+		readl(fb->regs + fb->off_ienb), readl(fb->regs + fb->off_cntl));
+#endif
+
+	return 0;
+}
+
+static inline u32 convert_bitfield(int val, struct fb_bitfield *bf)
+{
+	unsigned int mask = (1 << bf->length) - 1;
+
+	return (val >> (16 - bf->length) & mask) << bf->offset;
+}
+
+/*
+ *  Set a single color register. The values supplied have a 16 bit
+ *  magnitude.  Return != 0 for invalid regno.
+ */
+static int
+clcdfb_setcolreg(unsigned int regno, unsigned int red, unsigned int green,
+		 unsigned int blue, unsigned int transp, struct fb_info *info)
+{
+	struct clcd_fb *fb = to_clcd(info);
+
+	if (regno < 16)
+		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |
+				  convert_bitfield(blue, &fb->fb.var.blue) |
+				  convert_bitfield(green, &fb->fb.var.green) |
+				  convert_bitfield(red, &fb->fb.var.red);
+
+	if (fb->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR && regno < 256) {
+		int hw_reg = CLCD_PALETTE + ((regno * 2) & ~3);
+		u32 val, mask, newval;
+
+		newval  = (red >> 11)  & 0x001f;
+		newval |= (green >> 6) & 0x03e0;
+		newval |= (blue >> 1)  & 0x7c00;
+
+		/*
+		 * 3.2.11: if we're configured for big endian
+		 * byte order, the palette entries are swapped.
+		 */
+		if (fb->clcd_cntl & CNTL_BEBO)
+			regno ^= 1;
+
+		if (regno & 1) {
+			newval <<= 16;
+			mask = 0x0000ffff;
+		} else {
+			mask = 0xffff0000;
+		}
+
+		val = readl(fb->regs + hw_reg) & mask;
+		writel(val | newval, fb->regs + hw_reg);
+	}
+
+	return regno > 255;
+}
+
+/*
+ *  Blank the screen if blank_mode != 0, else unblank. If blank == NULL
+ *  then the caller blanks by setting the CLUT (Color Look Up Table) to all
+ *  black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
+ *  to e.g. a video mode which doesn't support it. Implements VESA suspend
+ *  and powerdown modes on hardware that supports disabling hsync/vsync:
+ *    blank_mode == 2: suspend vsync
+ *    blank_mode == 3: suspend hsync
+ *    blank_mode == 4: powerdown
+ */
+static int clcdfb_blank(int blank_mode, struct fb_info *info)
+{
+	struct clcd_fb *fb = to_clcd(info);
+
+	if (blank_mode != 0) {
+		clcdfb_disable(fb);
+	} else {
+		clcdfb_enable(fb, fb->clcd_cntl);
+	}
+	return 0;
+}
+
+static int clcdfb_mmap(struct fb_info *info,
+		       struct vm_area_struct *vma)
+{
+	struct clcd_fb *fb = to_clcd(info);
+	unsigned long len, off = vma->vm_pgoff << PAGE_SHIFT;
+	int ret = -EINVAL;
+
+	len = info->fix.smem_len;
+
+	if (off <= len && vma->vm_end - vma->vm_start <= len - off &&
+	    fb->board->mmap)
+		ret = fb->board->mmap(fb, vma);
+
+	return ret;
+}
+
+static const struct fb_ops clcdfb_ops = {
+	.owner		= THIS_MODULE,
+	.fb_check_var	= clcdfb_check_var,
+	.fb_set_par	= clcdfb_set_par,
+	.fb_setcolreg	= clcdfb_setcolreg,
+	.fb_blank	= clcdfb_blank,
+	.fb_fillrect	= cfb_fillrect,
+	.fb_copyarea	= cfb_copyarea,
+	.fb_imageblit	= cfb_imageblit,
+	.fb_mmap	= clcdfb_mmap,
+};
+
+static int clcdfb_register(struct clcd_fb *fb)
+{
+	int ret;
+
+	/*
+	 * ARM PL111 always has IENB at 0x1c; it's only PL110
+	 * which is reversed on some platforms.
+	 */
+	if (amba_manf(fb->dev) == 0x41 && amba_part(fb->dev) == 0x111) {
+		fb->off_ienb = CLCD_PL111_IENB;
+		fb->off_cntl = CLCD_PL111_CNTL;
+	} else {
+		fb->off_ienb = CLCD_PL110_IENB;
+		fb->off_cntl = CLCD_PL110_CNTL;
+	}
+
+	fb->clk = clk_get(&fb->dev->dev, NULL);
+	if (IS_ERR(fb->clk)) {
+		ret = PTR_ERR(fb->clk);
+		goto out;
+	}
+
+	ret = clk_prepare(fb->clk);
+	if (ret)
+		goto free_clk;
+
+	fb->fb.device		= &fb->dev->dev;
+
+	fb->fb.fix.mmio_start	= fb->dev->res.start;
+	fb->fb.fix.mmio_len	= resource_size(&fb->dev->res);
+
+	fb->regs = ioremap(fb->fb.fix.mmio_start, fb->fb.fix.mmio_len);
+	if (!fb->regs) {
+		printk(KERN_ERR "CLCD: unable to remap registers\n");
+		ret = -ENOMEM;
+		goto clk_unprep;
+	}
+
+	fb->fb.fbops		= &clcdfb_ops;
+	fb->fb.flags		= FBINFO_FLAG_DEFAULT;
+	fb->fb.pseudo_palette	= fb->cmap;
+
+	strncpy(fb->fb.fix.id, clcd_name, sizeof(fb->fb.fix.id));
+	fb->fb.fix.type		= FB_TYPE_PACKED_PIXELS;
+	fb->fb.fix.type_aux	= 0;
+	fb->fb.fix.xpanstep	= 0;
+	fb->fb.fix.ypanstep	= 0;
+	fb->fb.fix.ywrapstep	= 0;
+	fb->fb.fix.accel	= FB_ACCEL_NONE;
+
+	fb->fb.var.xres		= fb->panel->mode.xres;
+	fb->fb.var.yres		= fb->panel->mode.yres;
+	fb->fb.var.xres_virtual	= fb->panel->mode.xres;
+	fb->fb.var.yres_virtual	= fb->panel->mode.yres;
+	fb->fb.var.bits_per_pixel = fb->panel->bpp;
+	fb->fb.var.grayscale	= fb->panel->grayscale;
+	fb->fb.var.pixclock	= fb->panel->mode.pixclock;
+	fb->fb.var.left_margin	= fb->panel->mode.left_margin;
+	fb->fb.var.right_margin	= fb->panel->mode.right_margin;
+	fb->fb.var.upper_margin	= fb->panel->mode.upper_margin;
+	fb->fb.var.lower_margin	= fb->panel->mode.lower_margin;
+	fb->fb.var.hsync_len	= fb->panel->mode.hsync_len;
+	fb->fb.var.vsync_len	= fb->panel->mode.vsync_len;
+	fb->fb.var.sync		= fb->panel->mode.sync;
+	fb->fb.var.vmode	= fb->panel->mode.vmode;
+	fb->fb.var.activate	= FB_ACTIVATE_NOW;
+	fb->fb.var.nonstd	= 0;
+	fb->fb.var.height	= fb->panel->height;
+	fb->fb.var.width	= fb->panel->width;
+	fb->fb.var.accel_flags	= 0;
+
+	fb->fb.monspecs.hfmin	= 0;
+	fb->fb.monspecs.hfmax   = 100000;
+	fb->fb.monspecs.vfmin	= 0;
+	fb->fb.monspecs.vfmax	= 400;
+	fb->fb.monspecs.dclkmin = 1000000;
+	fb->fb.monspecs.dclkmax	= 100000000;
+
+	/*
+	 * Make sure that the bitfields are set appropriately.
+	 */
+	clcdfb_set_bitfields(fb, &fb->fb.var);
+
+	/*
+	 * Allocate colourmap.
+	 */
+	ret = fb_alloc_cmap(&fb->fb.cmap, 256, 0);
+	if (ret)
+		goto unmap;
+
+	/*
+	 * Ensure interrupts are disabled.
+	 */
+	writel(0, fb->regs + fb->off_ienb);
+
+	fb_set_var(&fb->fb, &fb->fb.var);
+
+	dev_info(&fb->dev->dev, "%s hardware, %s display\n",
+	         fb->board->name, fb->panel->mode.name);
+
+	ret = register_framebuffer(&fb->fb);
+	if (ret == 0)
+		goto out;
+
+	printk(KERN_ERR "CLCD: cannot register framebuffer (%d)\n", ret);
+
+	fb_dealloc_cmap(&fb->fb.cmap);
+ unmap:
+	iounmap(fb->regs);
+ clk_unprep:
+	clk_unprepare(fb->clk);
+ free_clk:
+	clk_put(fb->clk);
+ out:
+	return ret;
+}
+
+#ifdef CONFIG_OF
+static int clcdfb_of_get_dpi_panel_mode(struct device_node *node,
+		struct clcd_panel *clcd_panel)
+{
+	int err;
+	struct display_timing timing;
+	struct videomode video;
+
+	err = of_get_display_timing(node, "panel-timing", &timing);
+	if (err) {
+		pr_err("%pOF: problems parsing panel-timing (%d)\n", node, err);
+		return err;
+	}
+
+	videomode_from_timing(&timing, &video);
+
+	err = fb_videomode_from_videomode(&video, &clcd_panel->mode);
+	if (err)
+		return err;
+
+	/* Set up some inversion flags */
+	if (timing.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE)
+		clcd_panel->tim2 |= TIM2_IPC;
+	else if (!(timing.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE))
+		/*
+		 * To preserve backwards compatibility, the IPC (inverted
+		 * pixel clock) flag needs to be set on any display that
+		 * doesn't explicitly specify that the pixel clock is
+		 * active on the negative or positive edge.
+		 */
+		clcd_panel->tim2 |= TIM2_IPC;
+
+	if (timing.flags & DISPLAY_FLAGS_HSYNC_LOW)
+		clcd_panel->tim2 |= TIM2_IHS;
+
+	if (timing.flags & DISPLAY_FLAGS_VSYNC_LOW)
+		clcd_panel->tim2 |= TIM2_IVS;
+
+	if (timing.flags & DISPLAY_FLAGS_DE_LOW)
+		clcd_panel->tim2 |= TIM2_IOE;
+
+	return 0;
+}
+
+static int clcdfb_snprintf_mode(char *buf, int size, struct fb_videomode *mode)
+{
+	return snprintf(buf, size, "%ux%u@%u", mode->xres, mode->yres,
+			mode->refresh);
+}
+
+static int clcdfb_of_get_backlight(struct device *dev,
+				   struct clcd_panel *clcd_panel)
+{
+	struct backlight_device *backlight;
+
+	/* Look up the optional backlight device */
+	backlight = devm_of_find_backlight(dev);
+	if (IS_ERR(backlight))
+		return PTR_ERR(backlight);
+
+	clcd_panel->backlight = backlight;
+	return 0;
+}
+
+static int clcdfb_of_get_mode(struct device *dev, struct device_node *panel,
+			      struct clcd_panel *clcd_panel)
+{
+	int err;
+	struct fb_videomode *mode;
+	char *name;
+	int len;
+
+	/* Only directly connected DPI panels supported for now */
+	if (of_device_is_compatible(panel, "panel-dpi"))
+		err = clcdfb_of_get_dpi_panel_mode(panel, clcd_panel);
+	else
+		err = -ENOENT;
+	if (err)
+		return err;
+	mode = &clcd_panel->mode;
+
+	len = clcdfb_snprintf_mode(NULL, 0, mode);
+	name = devm_kzalloc(dev, len + 1, GFP_KERNEL);
+	if (!name)
+		return -ENOMEM;
+
+	clcdfb_snprintf_mode(name, len + 1, mode);
+	mode->name = name;
+
+	return 0;
+}
+
+static int clcdfb_of_init_tft_panel(struct clcd_fb *fb, u32 r0, u32 g0, u32 b0)
+{
+	static struct {
+		unsigned int part;
+		u32 r0, g0, b0;
+		u32 caps;
+	} panels[] = {
+		{ 0x110, 1,  7, 13, CLCD_CAP_5551 },
+		{ 0x110, 0,  8, 16, CLCD_CAP_888 },
+		{ 0x110, 16, 8, 0,  CLCD_CAP_888 },
+		{ 0x111, 4, 14, 20, CLCD_CAP_444 },
+		{ 0x111, 3, 11, 19, CLCD_CAP_444 | CLCD_CAP_5551 },
+		{ 0x111, 3, 10, 19, CLCD_CAP_444 | CLCD_CAP_5551 |
+				    CLCD_CAP_565 },
+		{ 0x111, 0,  8, 16, CLCD_CAP_444 | CLCD_CAP_5551 |
+				    CLCD_CAP_565 | CLCD_CAP_888 },
+	};
+	int i;
+
+	/* Bypass pixel clock divider */
+	fb->panel->tim2 |= TIM2_BCD;
+
+	/* TFT display, vert. comp. interrupt at the start of the back porch */
+	fb->panel->cntl |= CNTL_LCDTFT | CNTL_LCDVCOMP(1);
+
+	fb->panel->caps = 0;
+
+	/* Match the setup with known variants */
+	for (i = 0; i < ARRAY_SIZE(panels) && !fb->panel->caps; i++) {
+		if (amba_part(fb->dev) != panels[i].part)
+			continue;
+		if (g0 != panels[i].g0)
+			continue;
+		if (r0 == panels[i].r0 && b0 == panels[i].b0)
+			fb->panel->caps = panels[i].caps;
+	}
+
+	/*
+	 * If we actually physically connected the R lines to B and
+	 * vice versa
+	 */
+	if (r0 != 0 && b0 == 0)
+		fb->panel->bgr_connection = true;
+
+	return fb->panel->caps ? 0 : -EINVAL;
+}
+
+static int clcdfb_of_init_display(struct clcd_fb *fb)
+{
+	struct device_node *endpoint, *panel;
+	int err;
+	unsigned int bpp;
+	u32 max_bandwidth;
+	u32 tft_r0b0g0[3];
+
+	fb->panel = devm_kzalloc(&fb->dev->dev, sizeof(*fb->panel), GFP_KERNEL);
+	if (!fb->panel)
+		return -ENOMEM;
+
+	/*
+	 * Fetch the panel endpoint.
+	 */
+	endpoint = of_graph_get_next_endpoint(fb->dev->dev.of_node, NULL);
+	if (!endpoint)
+		return -ENODEV;
+
+	panel = of_graph_get_remote_port_parent(endpoint);
+	if (!panel)
+		return -ENODEV;
+
+	err = clcdfb_of_get_backlight(&fb->dev->dev, fb->panel);
+	if (err)
+		return err;
+
+	err = clcdfb_of_get_mode(&fb->dev->dev, panel, fb->panel);
+	if (err)
+		return err;
+
+	err = of_property_read_u32(fb->dev->dev.of_node, "max-memory-bandwidth",
+			&max_bandwidth);
+	if (!err) {
+		/*
+		 * max_bandwidth is in bytes per second and pixclock in
+		 * pico-seconds, so the maximum allowed bits per pixel is
+		 *   8 * max_bandwidth / (PICOS2KHZ(pixclock) * 1000)
+		 * Rearrange this calculation to avoid overflow and then ensure
+		 * result is a valid format.
+		 */
+		bpp = max_bandwidth / (1000 / 8)
+			/ PICOS2KHZ(fb->panel->mode.pixclock);
+		bpp = rounddown_pow_of_two(bpp);
+		if (bpp > 32)
+			bpp = 32;
+	} else
+		bpp = 32;
+	fb->panel->bpp = bpp;
+
+#ifdef CONFIG_CPU_BIG_ENDIAN
+	fb->panel->cntl |= CNTL_BEBO;
+#endif
+	fb->panel->width = -1;
+	fb->panel->height = -1;
+
+	if (of_property_read_u32_array(endpoint,
+			"arm,pl11x,tft-r0g0b0-pads",
+			tft_r0b0g0, ARRAY_SIZE(tft_r0b0g0)) != 0)
+		return -ENOENT;
+
+	return clcdfb_of_init_tft_panel(fb, tft_r0b0g0[0],
+					tft_r0b0g0[1],  tft_r0b0g0[2]);
+}
+
+static int clcdfb_of_vram_setup(struct clcd_fb *fb)
+{
+	int err;
+	struct device_node *memory;
+	u64 size;
+
+	err = clcdfb_of_init_display(fb);
+	if (err)
+		return err;
+
+	memory = of_parse_phandle(fb->dev->dev.of_node, "memory-region", 0);
+	if (!memory)
+		return -ENODEV;
+
+	fb->fb.screen_base = of_iomap(memory, 0);
+	if (!fb->fb.screen_base)
+		return -ENOMEM;
+
+	fb->fb.fix.smem_start = of_translate_address(memory,
+			of_get_address(memory, 0, &size, NULL));
+	fb->fb.fix.smem_len = size;
+
+	return 0;
+}
+
+static int clcdfb_of_vram_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
+{
+	unsigned long off, user_size, kernel_size;
+
+
+	off = vma->vm_pgoff << PAGE_SHIFT;
+	user_size = vma->vm_end - vma->vm_start;
+	kernel_size = fb->fb.fix.smem_len;
+
+	if (off >= kernel_size || user_size > (kernel_size - off))
+		return -ENXIO;
+
+	return remap_pfn_range(vma, vma->vm_start,
+			__phys_to_pfn(fb->fb.fix.smem_start) + vma->vm_pgoff,
+			user_size,
+			pgprot_writecombine(vma->vm_page_prot));
+}
+
+static void clcdfb_of_vram_remove(struct clcd_fb *fb)
+{
+	iounmap(fb->fb.screen_base);
+}
+
+static int clcdfb_of_dma_setup(struct clcd_fb *fb)
+{
+	unsigned long framesize;
+	dma_addr_t dma;
+	int err;
+
+	err = clcdfb_of_init_display(fb);
+	if (err)
+		return err;
+
+	framesize = PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres *
+			fb->panel->bpp / 8);
+	fb->fb.screen_base = dma_alloc_coherent(&fb->dev->dev, framesize,
+			&dma, GFP_KERNEL);
+	if (!fb->fb.screen_base)
+		return -ENOMEM;
+
+	fb->fb.fix.smem_start = dma;
+	fb->fb.fix.smem_len = framesize;
+
+	return 0;
+}
+
+static int clcdfb_of_dma_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)
+{
+	return dma_mmap_wc(&fb->dev->dev, vma, fb->fb.screen_base,
+			   fb->fb.fix.smem_start, fb->fb.fix.smem_len);
+}
+
+static void clcdfb_of_dma_remove(struct clcd_fb *fb)
+{
+	dma_free_coherent(&fb->dev->dev, fb->fb.fix.smem_len,
+			fb->fb.screen_base, fb->fb.fix.smem_start);
+}
+
+static struct clcd_board *clcdfb_of_get_board(struct amba_device *dev)
+{
+	struct clcd_board *board = devm_kzalloc(&dev->dev, sizeof(*board),
+			GFP_KERNEL);
+	struct device_node *node = dev->dev.of_node;
+
+	if (!board)
+		return NULL;
+
+	board->name = of_node_full_name(node);
+	board->caps = CLCD_CAP_ALL;
+	board->check = clcdfb_check;
+	board->decode = clcdfb_decode;
+	if (of_find_property(node, "memory-region", NULL)) {
+		board->setup = clcdfb_of_vram_setup;
+		board->mmap = clcdfb_of_vram_mmap;
+		board->remove = clcdfb_of_vram_remove;
+	} else {
+		board->setup = clcdfb_of_dma_setup;
+		board->mmap = clcdfb_of_dma_mmap;
+		board->remove = clcdfb_of_dma_remove;
+	}
+
+	return board;
+}
+#else
+static struct clcd_board *clcdfb_of_get_board(struct amba_device *dev)
+{
+	return NULL;
+}
+#endif
+
+static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id)
+{
+	struct clcd_board *board = dev_get_platdata(&dev->dev);
+	struct clcd_fb *fb;
+	int ret;
+
+	if (!board)
+		board = clcdfb_of_get_board(dev);
+
+	if (!board)
+		return -EINVAL;
+
+	ret = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		goto out;
+
+	ret = amba_request_regions(dev, NULL);
+	if (ret) {
+		printk(KERN_ERR "CLCD: unable to reserve regs region\n");
+		goto out;
+	}
+
+	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+	if (!fb) {
+		ret = -ENOMEM;
+		goto free_region;
+	}
+
+	fb->dev = dev;
+	fb->board = board;
+
+	dev_info(&fb->dev->dev, "PL%03x designer %02x rev%u at 0x%08llx\n",
+		amba_part(dev), amba_manf(dev), amba_rev(dev),
+		(unsigned long long)dev->res.start);
+
+	ret = fb->board->setup(fb);
+	if (ret)
+		goto free_fb;
+
+	ret = clcdfb_register(fb);
+	if (ret == 0) {
+		amba_set_drvdata(dev, fb);
+		goto out;
+	}
+
+	fb->board->remove(fb);
+ free_fb:
+	kfree(fb);
+ free_region:
+	amba_release_regions(dev);
+ out:
+	return ret;
+}
+
+static int clcdfb_remove(struct amba_device *dev)
+{
+	struct clcd_fb *fb = amba_get_drvdata(dev);
+
+	clcdfb_disable(fb);
+	unregister_framebuffer(&fb->fb);
+	if (fb->fb.cmap.len)
+		fb_dealloc_cmap(&fb->fb.cmap);
+	iounmap(fb->regs);
+	clk_unprepare(fb->clk);
+	clk_put(fb->clk);
+
+	fb->board->remove(fb);
+
+	kfree(fb);
+
+	amba_release_regions(dev);
+
+	return 0;
+}
+
+static const struct amba_id clcdfb_id_table[] = {
+	{
+		.id	= 0x00041110,
+		.mask	= 0x000ffffe,
+	},
+	{ 0, 0 },
+};
+
+MODULE_DEVICE_TABLE(amba, clcdfb_id_table);
+
+static struct amba_driver clcd_driver = {
+	.drv 		= {
+		.name	= "clcd-pl11x",
+	},
+	.probe		= clcdfb_probe,
+	.remove		= clcdfb_remove,
+	.id_table	= clcdfb_id_table,
+};
+
+static int __init amba_clcdfb_init(void)
+{
+	if (fb_get_options("ambafb", NULL))
+		return -ENODEV;
+
+	return amba_driver_register(&clcd_driver);
+}
+
+module_init(amba_clcdfb_init);
+
+static void __exit amba_clcdfb_exit(void)
+{
+	amba_driver_unregister(&clcd_driver);
+}
+
+module_exit(amba_clcdfb_exit);
+
+MODULE_DESCRIPTION("ARM PrimeCell PL110 CLCD core driver");
+MODULE_LICENSE("GPL");

drivers/video/fbdev/core/fbcon.c

···
 
 	if (font->width <= 8) {
 		j = vc->vc_font.height;
+		if (font->charcount * j > FNTSIZE(fontdata))
+			return -EINVAL;
+
 		for (i = 0; i < font->charcount; i++) {
 			memcpy(data, fontdata, j);
 			memset(data + j, 0, 32 - j);
···
 		}
 	} else if (font->width <= 16) {
 		j = vc->vc_font.height * 2;
+		if (font->charcount * j > FNTSIZE(fontdata))
+			return -EINVAL;
+
 		for (i = 0; i < font->charcount; i++) {
 			memcpy(data, fontdata, j);
 			memset(data + j, 0, 64 - j);
···
 			fontdata += j;
 		}
 	} else if (font->width <= 24) {
+		if (font->charcount * (vc->vc_font.height * sizeof(u32)) > FNTSIZE(fontdata))
+			return -EINVAL;
+
 		for (i = 0; i < font->charcount; i++) {
 			for (j = 0; j < vc->vc_font.height; j++) {
 				*data++ = fontdata[0];
···
 		}
 	} else {
 		j = vc->vc_font.height * 4;
+		if (font->charcount * j > FNTSIZE(fontdata))
+			return -EINVAL;
+
 		for (i = 0; i < font->charcount; i++) {
 			memcpy(data, fontdata, j);
 			memset(data + j, 0, 128 - j);

drivers/video/fbdev/core/fbcon.h

···
 #define attr_bgcol_ec(bgshift, vc, info) attr_col_ec(bgshift, vc, info, 0)
 #define attr_fgcol_ec(fgshift, vc, info) attr_col_ec(fgshift, vc, info, 1)
 
-/* Font */
-#define REFCOUNT(fd)	(((int *)(fd))[-1])
-#define FNTSIZE(fd)	(((int *)(fd))[-2])
-#define FNTCHARCNT(fd)	(((int *)(fd))[-3])
-#define FNTSUM(fd)	(((int *)(fd))[-4])
-#define FONT_EXTRA_WORDS 4
-
     /*
      *  Scroll Method
      */

drivers/video/fbdev/core/fbcon_rotate.c

···
 #include <linux/fb.h>
 #include <linux/vt_kern.h>
 #include <linux/console.h>
+#include <linux/font.h>
 #include <asm/types.h>
 #include "fbcon.h"
 #include "fbcon_rotate.h"

drivers/video/fbdev/core/tileblit.c

···
 #include <linux/fb.h>
 #include <linux/vt_kern.h>
 #include <linux/console.h>
+#include <linux/font.h>
 #include <asm/types.h>
 #include "fbcon.h"
 

fs/afs/inode.c

···
 
 static void afs_setattr_success(struct afs_operation *op)
 {
-	struct inode *inode = &op->file[0].vnode->vfs_inode;
+	struct afs_vnode_param *vp = &op->file[0];
+	struct inode *inode = &vp->vnode->vfs_inode;
+	loff_t old_i_size = i_size_read(inode);
 
-	afs_vnode_commit_status(op, &op->file[0]);
+	op->setattr.old_i_size = old_i_size;
+	afs_vnode_commit_status(op, vp);
+	/* inode->i_size has now been changed. */
+
 	if (op->setattr.attr->ia_valid & ATTR_SIZE) {
-		loff_t i_size = inode->i_size, size = op->setattr.attr->ia_size;
-		if (size > i_size)
-			pagecache_isize_extended(inode, i_size, size);
-		truncate_pagecache(inode, size);
+		loff_t size = op->setattr.attr->ia_size;
+		if (size > old_i_size)
+			pagecache_isize_extended(inode, old_i_size, size);
+	}
+}
+
+static void afs_setattr_edit_file(struct afs_operation *op)
+{
+	struct afs_vnode_param *vp = &op->file[0];
+	struct inode *inode = &vp->vnode->vfs_inode;
+
+	if (op->setattr.attr->ia_valid & ATTR_SIZE) {
+		loff_t size = op->setattr.attr->ia_size;
+		loff_t i_size = op->setattr.old_i_size;
+
+		if (size < i_size)
+			truncate_pagecache(inode, size);
 	}
 }
 
···
 	.issue_afs_rpc	= afs_fs_setattr,
 	.issue_yfs_rpc	= yfs_fs_setattr,
 	.success	= afs_setattr_success,
+	.edit_dir	= afs_setattr_edit_file,
 };
 
 /*
···
 	if (S_ISREG(vnode->vfs_inode.i_mode))
 		filemap_write_and_wait(vnode->vfs_inode.i_mapping);
 
+	/* Prevent any new writebacks from starting whilst we do this. */
+	down_write(&vnode->validate_lock);
+
 	op = afs_alloc_operation(((attr->ia_valid & ATTR_FILE) ?
 				  afs_file_key(attr->ia_file) : NULL),
 				 vnode->volume);
-	if (IS_ERR(op))
-		return PTR_ERR(op);
+	if (IS_ERR(op)) {
+		ret = PTR_ERR(op);
+		goto out_unlock;
+	}
 
 	afs_op_set_vnode(op, 0, vnode);
 	op->setattr.attr = attr;
···
 	op->file[0].update_ctime = 1;
 
 	op->ops = &afs_setattr_operation;
-	return afs_do_sync_operation(op);
+	ret = afs_do_sync_operation(op);
+
+out_unlock:
+	up_write(&vnode->validate_lock);
+	_leave(" = %d", ret);
+	return ret;
 }

fs/afs/internal.h

···
 		} store;
 		struct {
 			struct iattr	*attr;
+			loff_t		old_i_size;
 		} setattr;
 		struct afs_acl	*acl;
 		struct yfs_acl	*yacl;

fs/afs/write.c

···
 int afs_writepages(struct address_space *mapping,
 		   struct writeback_control *wbc)
 {
+	struct afs_vnode *vnode = AFS_FS_I(mapping->host);
 	pgoff_t start, end, next;
 	int ret;
 
 	_enter("");
+
+	/* We have to be careful as we can end up racing with setattr()
+	 * truncating the pagecache since the caller doesn't take a lock here
+	 * to prevent it.
+	 */
+	if (wbc->sync_mode == WB_SYNC_ALL)
+		down_read(&vnode->validate_lock);
+	else if (!down_read_trylock(&vnode->validate_lock))
+		return 0;
 
 	if (wbc->range_cyclic) {
 		start = mapping->writeback_index;
···
 		ret = afs_writepages_region(mapping, wbc, start, end, &next);
 	}
 
+	up_read(&vnode->validate_lock);
 	_leave(" = %d", ret);
 	return ret;
 }

fs/exfat/cache.c

···
 #include "exfat_raw.h"
 #include "exfat_fs.h"
 
-#define EXFAT_CACHE_VALID	0
 #define EXFAT_MAX_CACHE		16
 
 struct exfat_cache {
···
 	if (!exfat_cachep)
 		return;
 	kmem_cache_destroy(exfat_cachep);
-}
-
-void exfat_cache_init_inode(struct inode *inode)
-{
-	struct exfat_inode_info *ei = EXFAT_I(inode);
-
-	spin_lock_init(&ei->cache_lru_lock);
-	ei->nr_caches = 0;
-	ei->cache_valid_id = EXFAT_CACHE_VALID + 1;
-	INIT_LIST_HEAD(&ei->cache_lru);
 }
 
 static inline struct exfat_cache *exfat_cache_alloc(void)

fs/exfat/exfat_fs.h

···
 	struct rcu_head rcu;
 };
 
+#define EXFAT_CACHE_VALID	0
+
 /*
  * EXFAT file system inode in-memory data
  */
···
 /* cache.c */
 int exfat_cache_init(void);
 void exfat_cache_shutdown(void);
-void exfat_cache_init_inode(struct inode *inode);
 void exfat_cache_inval_inode(struct inode *inode);
 int exfat_get_cluster(struct inode *inode, unsigned int cluster,
 		unsigned int *fclus, unsigned int *dclus,

fs/exfat/inode.c

···
 	ei->i_crtime = info->crtime;
 	inode->i_atime = info->atime;
 
-	exfat_cache_init_inode(inode);
-
 	return 0;
 }
 

fs/exfat/namei.c

···
 
 	i_pos = exfat_make_i_pos(&info);
 	inode = exfat_build_inode(sb, &info, i_pos);
-	if (IS_ERR(inode))
+	err = PTR_ERR_OR_ZERO(inode);
+	if (err)
 		goto unlock;
 
 	inode_inc_iversion(inode);
···
 
 	i_pos = exfat_make_i_pos(&info);
 	inode = exfat_build_inode(sb, &info, i_pos);
-	if (IS_ERR(inode)) {
-		err = PTR_ERR(inode);
+	err = PTR_ERR_OR_ZERO(inode);
+	if (err)
 		goto unlock;
-	}
 
 	i_mode = inode->i_mode;
 	alias = d_find_alias(inode);
···
 
 	i_pos = exfat_make_i_pos(&info);
 	inode = exfat_build_inode(sb, &info, i_pos);
-	if (IS_ERR(inode)) {
-		err = PTR_ERR(inode);
+	err = PTR_ERR_OR_ZERO(inode);
+	if (err)
 		goto unlock;
-	}
 
 	inode_inc_iversion(inode);
 	inode->i_mtime = inode->i_atime = inode->i_ctime =

fs/exfat/super.c

···
 	inode->i_mtime = inode->i_atime = inode->i_ctime = ei->i_crtime =
 		current_time(inode);
 	exfat_truncate_atime(&inode->i_atime);
-	exfat_cache_init_inode(inode);
 	return 0;
 }
 
···
 {
 	struct exfat_inode_info *ei = (struct exfat_inode_info *)foo;
 
+	spin_lock_init(&ei->cache_lru_lock);
+	ei->nr_caches = 0;
+	ei->cache_valid_id = EXFAT_CACHE_VALID + 1;
+	INIT_LIST_HEAD(&ei->cache_lru);
 	INIT_HLIST_NODE(&ei->i_hash_fat);
 	inode_init_once(&ei->vfs_inode);
 }

fs/splice.c

···
 	return 1;
 }
 
+/* We know we have a pipe buffer, but maybe it's empty? */
+static inline bool eat_empty_buffer(struct pipe_inode_info *pipe)
+{
+	unsigned int tail = pipe->tail;
+	unsigned int mask = pipe->ring_size - 1;
+	struct pipe_buffer *buf = &pipe->bufs[tail & mask];
+
+	if (unlikely(!buf->len)) {
+		pipe_buf_release(pipe, buf);
+		pipe->tail = tail+1;
+		return true;
+	}
+
+	return false;
+}
+
 /**
  * splice_from_pipe_next - wait for some data to splice from
  * @pipe:	pipe to splice from
···
 	if (signal_pending(current))
 		return -ERESTARTSYS;
 
+repeat:
 	while (pipe_empty(pipe->head, pipe->tail)) {
 		if (!pipe->writers)
 			return 0;
···
 
 		pipe_wait_readable(pipe);
 	}
+
+	if (eat_empty_buffer(pipe))
+		goto repeat;
 
 	return 1;
 }

include/drm/drm_dsc.h

···
  * This structure represents the DSC PPS infoframe required to send the Picture
  * Parameter Set metadata required before enabling VESA Display Stream
  * Compression. This is based on the DP Secondary Data Packet structure and
- * comprises of SDP Header as defined &struct struct dp_sdp_header in drm_dp_helper.h
+ * comprises of SDP Header as defined &struct dp_sdp_header in drm_dp_helper.h
  * and PPS payload defined in &struct drm_dsc_picture_parameter_set.
  *
  * @pps_header: Header for PPS as per DP SDP header format of type

include/linux/amba/clcd-regs.h

···
+/*
+ * David A Rusling
+ *
+ * Copyright (C) 2001 ARM Limited
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef AMBA_CLCD_REGS_H
+#define AMBA_CLCD_REGS_H
+
+/*
+ * CLCD Controller Internal Register addresses
+ */
+#define CLCD_TIM0		0x00000000
+#define CLCD_TIM1 		0x00000004
+#define CLCD_TIM2 		0x00000008
+#define CLCD_TIM3 		0x0000000c
+#define CLCD_UBAS 		0x00000010
+#define CLCD_LBAS 		0x00000014
+
+#define CLCD_PL110_IENB		0x00000018
+#define CLCD_PL110_CNTL		0x0000001c
+#define CLCD_PL110_STAT		0x00000020
+#define CLCD_PL110_INTR 	0x00000024
+#define CLCD_PL110_UCUR		0x00000028
+#define CLCD_PL110_LCUR		0x0000002C
+
+#define CLCD_PL111_CNTL		0x00000018
+#define CLCD_PL111_IENB		0x0000001c
+#define CLCD_PL111_RIS		0x00000020
+#define CLCD_PL111_MIS		0x00000024
+#define CLCD_PL111_ICR		0x00000028
+#define CLCD_PL111_UCUR		0x0000002c
+#define CLCD_PL111_LCUR		0x00000030
+
+#define CLCD_PALL 		0x00000200
+#define CLCD_PALETTE		0x00000200
+
+#define TIM2_PCD_LO_MASK	GENMASK(4, 0)
+#define TIM2_PCD_LO_BITS	5
+#define TIM2_CLKSEL		(1 << 5)
+#define TIM2_ACB_MASK		GENMASK(10, 6)
+#define TIM2_IVS		(1 << 11)
+#define TIM2_IHS		(1 << 12)
+#define TIM2_IPC		(1 << 13)
+#define TIM2_IOE		(1 << 14)
+#define TIM2_BCD		(1 << 26)
+#define TIM2_PCD_HI_MASK	GENMASK(31, 27)
+#define TIM2_PCD_HI_BITS	5
+#define TIM2_PCD_HI_SHIFT	27
+
+#define CNTL_LCDEN		(1 << 0)
+#define CNTL_LCDBPP1		(0 << 1)
+#define CNTL_LCDBPP2		(1 << 1)
+#define CNTL_LCDBPP4		(2 << 1)
+#define CNTL_LCDBPP8		(3 << 1)
+#define CNTL_LCDBPP16		(4 << 1)
+#define CNTL_LCDBPP16_565	(6 << 1)
+#define CNTL_LCDBPP16_444	(7 << 1)
+#define CNTL_LCDBPP24		(5 << 1)
+#define CNTL_LCDBW		(1 << 4)
+#define CNTL_LCDTFT		(1 << 5)
+#define CNTL_LCDMONO8		(1 << 6)
+#define CNTL_LCDDUAL		(1 << 7)
+#define CNTL_BGR		(1 << 8)
+#define CNTL_BEBO		(1 << 9)
+#define CNTL_BEPO		(1 << 10)
+#define CNTL_LCDPWR		(1 << 11)
+#define CNTL_LCDVCOMP(x)	((x) << 12)
+#define CNTL_LDMAFIFOTIME	(1 << 15)
+#define CNTL_WATERMARK		(1 << 16)
+
+/* ST Microelectronics variant bits */
+#define CNTL_ST_1XBPP_444	0x0
+#define CNTL_ST_1XBPP_5551	(1 << 17)
+#define CNTL_ST_1XBPP_565	(1 << 18)
+#define CNTL_ST_CDWID_12	0x0
+#define CNTL_ST_CDWID_16	(1 << 19)
+#define CNTL_ST_CDWID_18	(1 << 20)
+#define CNTL_ST_CDWID_24	((1 << 19)|(1 << 20))
+#define CNTL_ST_CEAEN		(1 << 21)
+#define CNTL_ST_LCDBPP24_PACKED	(6 << 1)
+
+#endif /* AMBA_CLCD_REGS_H */

include/linux/amba/clcd.h

···
+/*
+ * linux/include/asm-arm/hardware/amba_clcd.h -- Integrator LCD panel.
+ *
+ * David A Rusling
+ *
+ * Copyright (C) 2001 ARM Limited
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+#include <linux/fb.h>
+#include <linux/amba/clcd-regs.h>
+
+enum {
+	/* individual formats */
+	CLCD_CAP_RGB444		= (1 << 0),
+	CLCD_CAP_RGB5551	= (1 << 1),
+	CLCD_CAP_RGB565		= (1 << 2),
+	CLCD_CAP_RGB888		= (1 << 3),
+	CLCD_CAP_BGR444		= (1 << 4),
+	CLCD_CAP_BGR5551	= (1 << 5),
+	CLCD_CAP_BGR565		= (1 << 6),
+	CLCD_CAP_BGR888		= (1 << 7),
+
+	/* connection layouts */
+	CLCD_CAP_444		= CLCD_CAP_RGB444 | CLCD_CAP_BGR444,
+	CLCD_CAP_5551		= CLCD_CAP_RGB5551 | CLCD_CAP_BGR5551,
+	CLCD_CAP_565		= CLCD_CAP_RGB565 | CLCD_CAP_BGR565,
+	CLCD_CAP_888		= CLCD_CAP_RGB888 | CLCD_CAP_BGR888,
+
+	/* red/blue ordering */
+	CLCD_CAP_RGB		= CLCD_CAP_RGB444 | CLCD_CAP_RGB5551 |
+				  CLCD_CAP_RGB565 | CLCD_CAP_RGB888,
+	CLCD_CAP_BGR		= CLCD_CAP_BGR444 | CLCD_CAP_BGR5551 |
+				  CLCD_CAP_BGR565 | CLCD_CAP_BGR888,
+
+	CLCD_CAP_ALL		= CLCD_CAP_BGR | CLCD_CAP_RGB,
+};
+
+struct backlight_device;
+
+struct clcd_panel {
+	struct fb_videomode	mode;
+	signed short		width;	/* width in mm */
+	signed short		height;	/* height in mm */
+	u32			tim2;
+	u32			tim3;
+	u32			cntl;
+	u32			caps;
+	unsigned int		bpp:8,
+				fixedtimings:1,
+				grayscale:1;
+	unsigned int		connector;
+	struct backlight_device	*backlight;
+	/*
+	 * If the B/R lines are switched between the CLCD
+	 * and the panel we need to know this and not try to
+	 * compensate with the BGR bit in the control register.
+	 */
+	bool			bgr_connection;
+};
+
+struct clcd_regs {
+	u32			tim0;
+	u32			tim1;
+	u32			tim2;
+	u32			tim3;
+	u32			cntl;
+	unsigned long		pixclock;
+};
+
+struct clcd_fb;
+
+/*
+ * the board-type specific routines
+ */
+struct clcd_board {
+	const char *name;
+
+	/*
+	 * Optional.  Hardware capability flags.
+	 */
+	u32	caps;
+
+	/*
+	 * Optional.  Check whether the var structure is acceptable
+	 * for this display.
+	 */
+	int	(*check)(struct clcd_fb *fb, struct fb_var_screeninfo *var);
+
+	/*
+	 * Compulsory.  Decode fb->fb.var into regs->*.  In the case of
+	 * fixed timing, set regs->* to the register values required.
+	 */
+	void	(*decode)(struct clcd_fb *fb, struct clcd_regs *regs);
+
+	/*
+	 * Optional.  Disable any extra display hardware.
+	 */
+	void	(*disable)(struct clcd_fb *);
+
+	/*
+	 * Optional.  Enable any extra display hardware.
+	 */
+	void	(*enable)(struct clcd_fb *);
+
+	/*
+	 * Setup platform specific parts of CLCD driver
+	 */
+	int	(*setup)(struct clcd_fb *);
+
+	/*
+	 * mmap the framebuffer memory
+	 */
+	int	(*mmap)(struct clcd_fb *, struct vm_area_struct *);
+
+	/*
+	 * Remove platform specific parts of CLCD driver
+	 */
+	void	(*remove)(struct clcd_fb *);
+};
+
+struct amba_device;
+struct clk;
+
+/* this data structure describes each frame buffer device we find */
+struct clcd_fb {
+	struct fb_info		fb;
+	struct amba_device	*dev;
+	struct clk		*clk;
+	struct clcd_panel	*panel;
+	struct clcd_board	*board;
+	void			*board_data;
+	void __iomem		*regs;
+	u16			off_ienb;
+	u16			off_cntl;
+	u32			clcd_cntl;
+	u32			cmap[16];
+	bool			clk_enabled;
+};
+
+static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs)
+{
+	struct fb_var_screeninfo *var = &fb->fb.var;
+	u32 val, cpl;
+
+	/*
+	 * Program the CLCD controller registers and start the CLCD
+	 */
+	val = ((var->xres / 16) - 1) << 2;
+	val |= (var->hsync_len - 1) << 8;
+	val |= (var->right_margin - 1) << 16;
+	val |= (var->left_margin - 1) << 24;
+	regs->tim0 = val;
+
+	val = var->yres;
+	if (fb->panel->cntl & CNTL_LCDDUAL)
+		val /= 2;
+	val -= 1;
+	val |= (var->vsync_len - 1) << 10;
+	val |= var->lower_margin << 16;
+	val |= var->upper_margin << 24;
+	regs->tim1 = val;
+
+	val = fb->panel->tim2;
+	val |= var->sync & FB_SYNC_HOR_HIGH_ACT  ? 0 : TIM2_IHS;
+	val |= var->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS;
+
+	cpl = var->xres_virtual;
+	if (fb->panel->cntl & CNTL_LCDTFT)	  /* TFT */
+		/* / 1 */;
+	else if (!var->grayscale)		  /* STN color */
+		cpl = cpl * 8 / 3;
+	else if (fb->panel->cntl & CNTL_LCDMONO8) /* STN monochrome, 8bit */
+		cpl /= 8;
+	else					  /* STN monochrome, 4bit */
+		cpl /= 4;
+
+	regs->tim2 = val | ((cpl - 1) << 16);
+
+	regs->tim3 = fb->panel->tim3;
+
+	val = fb->panel->cntl;
+	if (var->grayscale)
+		val |= CNTL_LCDBW;
+
+	if (fb->panel->caps && fb->board->caps && var->bits_per_pixel >= 16) {
+		/*
+		 * if board and panel supply capabilities, we can support
+		 * changing BGR/RGB depending on supplied parameters. Here
+		 * we switch to what the framebuffer is providing if need
+		 * be, so if the framebuffer is BGR but the display connection
+		 * is RGB (first case) we switch it around. Vice versa mutatis
+		 * mutandis if the framebuffer is RGB but the display connection
+		 * is BGR, we flip it around.
+		 */
+		if (var->red.offset == 0)
+			val &= ~CNTL_BGR;
+		else
+			val |= CNTL_BGR;
+		if (fb->panel->bgr_connection)
+			val ^= CNTL_BGR;
+	}
+
+	switch (var->bits_per_pixel) {
+	case 1:
+		val |= CNTL_LCDBPP1;
+		break;
+	case 2:
+		val |= CNTL_LCDBPP2;
+		break;
+	case 4:
+		val |= CNTL_LCDBPP4;
+		break;
+	case 8:
+		val |= CNTL_LCDBPP8;
+		break;
+	case 16:
+		/*
+		 * PL110 cannot choose between 5551 and 565 modes in its
+		 * control register.  It is possible to use 565 with
+		 * custom external wiring.
+		 */
+		if (amba_part(fb->dev) == 0x110 ||
+		    var->green.length == 5)
+			val |= CNTL_LCDBPP16;
+		else if (var->green.length == 6)
+			val |= CNTL_LCDBPP16_565;
+		else
+			val |= CNTL_LCDBPP16_444;
+		break;
+	case 32:
+		val |= CNTL_LCDBPP24;
+		break;
+	}
+
+	regs->cntl = val;
+	regs->pixclock = var->pixclock;
+}
+
+static inline int clcdfb_check(struct clcd_fb *fb, struct fb_var_screeninfo *var)
+{
+	var->xres_virtual = var->xres = (var->xres + 15) & ~15;
+	var->yres_virtual = var->yres = (var->yres + 1) & ~1;
+
+#define CHECK(e,l,h) (var->e < l || var->e > h)
+	if (CHECK(right_margin, (5+1), 256) ||	/* back porch */
+	    CHECK(left_margin, (5+1), 256) ||	/* front porch */
+	    CHECK(hsync_len, (5+1), 256) ||
+	    var->xres > 4096 ||
+	    var->lower_margin > 255 ||		/* back porch */
+	    var->upper_margin > 255 ||		/* front porch */
+	    var->vsync_len > 32 ||
+	    var->yres > 1024)
+		return -EINVAL;
+#undef CHECK
+
+	/* single panel mode: PCD = max(PCD, 1) */
+	/* dual panel mode: PCD = max(PCD, 5) */
+
+	/*
+	 * You can't change the grayscale setting, and
+	 * we can only do non-interlaced video.
+	 */
+	if (var->grayscale != fb->fb.var.grayscale ||
+	    (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
+		return -EINVAL;
+
+#define CHECK(e) (var->e != fb->fb.var.e)
+	if (fb->panel->fixedtimings &&
+	    (CHECK(xres)		||
+	     CHECK(yres)		||
+	     CHECK(bits_per_pixel)	||
+	     CHECK(pixclock)		||
+	     CHECK(left_margin)		||
+	     CHECK(right_margin)	||
+	     CHECK(upper_margin)	||
+	     CHECK(lower_margin)	||
+	     CHECK(hsync_len)		||
+	     CHECK(vsync_len)		||
+	     CHECK(sync)))
+		return -EINVAL;
+#undef CHECK
+
+	var->nonstd = 0;
+	var->accel_flags = 0;
+
+	return 0;
+}

include/linux/font.h

···
 /* Max. length for the name of a predefined font */
 #define MAX_FONT_NAME	32
 
+/* Extra word getters */
+#define REFCOUNT(fd)	(((int *)(fd))[-1])
+#define FNTSIZE(fd)	(((int *)(fd))[-2])
+#define FNTCHARCNT(fd)	(((int *)(fd))[-3])
+#define FNTSUM(fd)	(((int *)(fd))[-4])
+
+#define FONT_EXTRA_WORDS 4
+
+struct font_data {
+	unsigned int extra[FONT_EXTRA_WORDS];
+	const unsigned char data[];
+} __packed;
+
 #endif /* _VIDEO_FONT_H */

include/uapi/linux/rxrpc.h

···
 	RXRPC_BUSY		= 6,	/* -r: server busy received [terminal] */
 	RXRPC_LOCAL_ERROR	= 7,	/* -r: local error generated [terminal] */
 	RXRPC_NEW_CALL		= 8,	/* -r: [Service] new incoming call notification */
-	RXRPC_ACCEPT		= 9,	/* s-: [Service] accept request */
 	RXRPC_EXCLUSIVE_CALL	= 10,	/* s-: Call should be on exclusive connection */
 	RXRPC_UPGRADE_SERVICE	= 11,	/* s-: Request service upgrade for client call */
 	RXRPC_TX_LENGTH		= 12,	/* s-: Total length of Tx data */
 	RXRPC_SET_CALL_TIMEOUT	= 13,	/* s-: Set one or more call timeouts */
+	RXRPC_CHARGE_ACCEPT	= 14,	/* s-: Charge the accept pool with a user call ID */
 	RXRPC__SUPPORTED
 };
 

include/xen/arm/page.h

···
 	})
 #define gfn_to_virt(m)		(__va(gfn_to_pfn(m) << XEN_PAGE_SHIFT))
 
+#define percpu_to_gfn(v)	\
+	(pfn_to_gfn(per_cpu_ptr_to_phys(v) >> XEN_PAGE_SHIFT))
+
 /* Only used in PV code. But ARM guests are always HVM. */
 static inline xmaddr_t arbitrary_virt_to_machine(void *vaddr)
 {

kernel/bpf/verifier.c

···
 	bool src_known = tnum_subreg_is_const(src_reg->var_off);
 	bool dst_known = tnum_subreg_is_const(dst_reg->var_off);
 	struct tnum var32_off = tnum_subreg(dst_reg->var_off);
-	s32 smin_val = src_reg->smin_value;
-	u32 umin_val = src_reg->umin_value;
+	s32 smin_val = src_reg->s32_min_value;
+	u32 umin_val = src_reg->u32_min_value;
 
 	/* Assuming scalar64_min_max_or will be called so it is safe
 	 * to skip updating register for known case.
···
 		/* ORing two positives gives a positive, so safe to
 		 * cast result into s64.
 		 */
-		dst_reg->s32_min_value = dst_reg->umin_value;
-		dst_reg->s32_max_value = dst_reg->umax_value;
+		dst_reg->s32_min_value = dst_reg->u32_min_value;
+		dst_reg->s32_max_value = dst_reg->u32_max_value;
 	}
 }
 

kernel/umh.c

···
 #include <linux/cred.h>
 #include <linux/file.h>
 #include <linux/fdtable.h>
+#include <linux/fs_struct.h>
 #include <linux/workqueue.h>
 #include <linux/security.h>
 #include <linux/mount.h>
···
 	spin_lock_irq(&current->sighand->siglock);
 	flush_signal_handlers(current, 1);
 	spin_unlock_irq(&current->sighand->siglock);
+
+	/*
+	 * Initial kernel threads share ther FS with init, in order to
+	 * get the init root directory. But we've now created a new
+	 * thread that is going to execve a user process and has its own
+	 * 'struct fs_struct'. Reset umask to the default.
+	 */
+	current->fs->umask = 0022;
 
 	/*
 	 * Our parent (unbound workqueue) runs with elevated scheduling

lib/fonts/font_10x18.c

···
 
 #define FONTDATAMAX 9216
 
-static const unsigned char fontdata_10x18[FONTDATAMAX] = {
-
+static struct font_data fontdata_10x18 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, 0x00, /* 0000000000 */
 	0x00, 0x00, /* 0000000000 */
···
 	0x00, 0x00, /* 0000000000 */
 	0x00, 0x00, /* 0000000000 */
 	0x00, 0x00, /* 0000000000 */
-
-};
+} };
 
 
 const struct font_desc font_10x18 = {
···
 	.name	= "10x18",
 	.width	= 10,
 	.height	= 18,
-	.data	= fontdata_10x18,
+	.data	= fontdata_10x18.data,
 #ifdef __sparc__
 	.pref	= 5,
 #else

lib/fonts/font_6x10.c

···
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/font.h>
 
-static const unsigned char fontdata_6x10[] = {
+#define FONTDATAMAX 2560
 
+static struct font_data fontdata_6x10 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
···
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
-
-};
+} };
 
 const struct font_desc font_6x10 = {
 	.idx	= FONT6x10_IDX,
 	.name	= "6x10",
 	.width	= 6,
 	.height	= 10,
-	.data	= fontdata_6x10,
+	.data	= fontdata_6x10.data,
 	.pref	= 0,
 };

lib/fonts/font_6x11.c

···
 
 #define FONTDATAMAX (11*256)
 
-static const unsigned char fontdata_6x11[FONTDATAMAX] = {
-
+static struct font_data fontdata_6x11 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
···
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
-
-};
+} };
 
 
 const struct font_desc font_vga_6x11 = {
···
 	.name	= "ProFont6x11",
 	.width	= 6,
 	.height	= 11,
-	.data	= fontdata_6x11,
+	.data	= fontdata_6x11.data,
 	/* Try avoiding this font if possible unless on MAC */
 	.pref	= -2000,
 };

lib/fonts/font_7x14.c

···
 
 #define FONTDATAMAX 3584
 
-static const unsigned char fontdata_7x14[FONTDATAMAX] = {
-
+static struct font_data fontdata_7x14 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, /* 0000000 */
 	0x00, /* 0000000 */
···
 	0x00, /* 0000000 */
 	0x00, /* 0000000 */
 	0x00, /* 0000000 */
-
-};
+} };
 
 
 const struct font_desc font_7x14 = {
···
 	.name	= "7x14",
 	.width	= 7,
 	.height	= 14,
-	.data	= fontdata_7x14,
+	.data	= fontdata_7x14.data,
 	.pref	= 0,
 };

lib/fonts/font_8x16.c

···
 
 #define FONTDATAMAX 4096
 
-static const unsigned char fontdata_8x16[FONTDATAMAX] = {
-
+static struct font_data fontdata_8x16 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
···
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
-
-};
+} };
 
 
 const struct font_desc font_vga_8x16 = {
···
 	.name	= "VGA8x16",
 	.width	= 8,
 	.height	= 16,
-	.data	= fontdata_8x16,
+	.data	= fontdata_8x16.data,
 	.pref	= 0,
 };
 EXPORT_SYMBOL(font_vga_8x16);

lib/fonts/font_8x8.c

···
 
 #define FONTDATAMAX 2048
 
-static const unsigned char fontdata_8x8[FONTDATAMAX] = {
-
+static struct font_data fontdata_8x8 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
···
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
 	0x00, /* 00000000 */
-
-};
+} };
 
 
 const struct font_desc font_vga_8x8 = {
···
 	.name	= "VGA8x8",
 	.width	= 8,
 	.height	= 8,
-	.data	= fontdata_8x8,
+	.data	= fontdata_8x8.data,
 	.pref	= 0,
 };

lib/fonts/font_acorn_8x8.c

···
 
 #include <linux/font.h>
 
-static const unsigned char acorndata_8x8[] = {
+#define FONTDATAMAX 2048
+
+static struct font_data acorndata_8x8 = {
+{ 0, 0, FONTDATAMAX, 0 }, {
 /* 00 */  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* ^@ */
 /* 01 */  0x7e, 0x81, 0xa5, 0x81, 0xbd, 0x99, 0x81, 0x7e, /* ^A */
 /* 02 */  0x7e, 0xff, 0xbd, 0xff, 0xc3, 0xe7, 0xff, 0x7e, /* ^B */
···
 /* FD */  0x38, 0x04, 0x18, 0x20, 0x3c, 0x00, 0x00, 0x00,
 /* FE */  0x00, 0x00, 0x3c, 0x3c, 0x3c, 0x3c, 0x00, 0x00,
 /* FF */  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
+} };
 
 const struct font_desc font_acorn_8x8 = {
 	.idx	= ACORN8x8_IDX,
 	.name	= "Acorn8x8",
 	.width	= 8,
 	.height	= 8,
-	.data	= acorndata_8x8,
+	.data	= acorndata_8x8.data,
 #ifdef CONFIG_ARCH_ACORN
 	.pref	= 20,
 #else

lib/fonts/font_mini_4x6.c

···
 
 #define FONTDATAMAX 1536
 
-static const unsigned char fontdata_mini_4x6[FONTDATAMAX] = {
-
+static struct font_data fontdata_mini_4x6 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/*{*/
 	  	/*   Char 0: ' '  */
 	0xee,	/*=  [*** ]       */
···
 	0xee,	/*=   [*** ]        */
 	0x00,	/*=   [    ]        */
 	/*}*/
-};
+} };
 
 const struct font_desc font_mini_4x6 = {
 	.idx	= MINI4x6_IDX,
 	.name	= "MINI4x6",
 	.width	= 4,
 	.height	= 6,
-	.data	= fontdata_mini_4x6,
+	.data	= fontdata_mini_4x6.data,
 	.pref	= 3,
 };
 

lib/fonts/font_pearl_8x8.c

···
 
 #define FONTDATAMAX 2048
 
-static const unsigned char fontdata_pearl8x8[FONTDATAMAX] = {
-
+static struct font_data fontdata_pearl8x8 = {
+   { 0, 0, FONTDATAMAX, 0 }, {
    /* 0 0x00 '^@' */
    0x00, /* 00000000 */
    0x00, /* 00000000 */
···
    0x00, /* 00000000 */
    0x00, /* 00000000 */
    0x00, /* 00000000 */
-
-};
+} };
 
 const struct font_desc font_pearl_8x8 = {
 	.idx	= PEARL8x8_IDX,
 	.name	= "PEARL8x8",
 	.width	= 8,
 	.height	= 8,
-	.data	= fontdata_pearl8x8,
+	.data	= fontdata_pearl8x8.data,
 	.pref	= 2,
 };

lib/fonts/font_sun12x22.c

···
 
 #define FONTDATAMAX 11264
 
-static const unsigned char fontdata_sun12x22[FONTDATAMAX] = {
-
+static struct font_data fontdata_sun12x22 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	/* 0 0x00 '^@' */
 	0x00, 0x00, /* 000000000000 */
 	0x00, 0x00, /* 000000000000 */
···
 	0x00, 0x00, /* 000000000000 */
 	0x00, 0x00, /* 000000000000 */
 	0x00, 0x00, /* 000000000000 */
-
-};
+} };
 
 
 const struct font_desc font_sun_12x22 = {
···
 	.name	= "SUN12x22",
 	.width	= 12,
 	.height	= 22,
-	.data	= fontdata_sun12x22,
+	.data	= fontdata_sun12x22.data,
 #ifdef __sparc__
 	.pref	= 5,
 #else

lib/fonts/font_sun8x16.c

···
 
 #define FONTDATAMAX 4096
 
-static const unsigned char fontdata_sun8x16[FONTDATAMAX] = {
+static struct font_data fontdata_sun8x16 = {
+{ 0, 0, FONTDATAMAX, 0 }, {
 /* */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 /* */ 0x00,0x00,0x7e,0x81,0xa5,0x81,0x81,0xbd,0x99,0x81,0x81,0x7e,0x00,0x00,0x00,0x00,
 /* */ 0x00,0x00,0x7e,0xff,0xdb,0xff,0xff,0xc3,0xe7,0xff,0xff,0x7e,0x00,0x00,0x00,0x00,
···
 /* */ 0x00,0x70,0xd8,0x30,0x60,0xc8,0xf8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 /* */ 0x00,0x00,0x00,0x00,0x7c,0x7c,0x7c,0x7c,0x7c,0x7c,0x7c,0x00,0x00,0x00,0x00,0x00,
 /* */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-};
+} };
 
 const struct font_desc font_sun_8x16 = {
 	.idx	= SUN8x16_IDX,
 	.name	= "SUN8x16",
 	.width	= 8,
 	.height	= 16,
-	.data	= fontdata_sun8x16,
+	.data	= fontdata_sun8x16.data,
 #ifdef __sparc__
 	.pref	= 10,
 #else

lib/fonts/font_ter16x32.c

···
 
 #define FONTDATAMAX 16384
 
-static const unsigned char fontdata_ter16x32[FONTDATAMAX] = {
-
+static struct font_data fontdata_ter16x32 = {
+	{ 0, 0, FONTDATAMAX, 0 }, {
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x00, 0x7f, 0xfc, 0x7f, 0xfc,
 	0x70, 0x1c, 0x70, 0x1c, 0x70, 0x1c, 0x70, 0x1c,
···
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,	/* 255 */
-
-};
+} };
 
 
 const struct font_desc font_ter_16x32 = {
···
 	.name	= "TER16x32",
 	.width	= 16,
 	.height = 32,
-	.data	= fontdata_ter16x32,
+	.data	= fontdata_ter16x32.data,
 #ifdef __sparc__
 	.pref	= 5,
 #else

mm/memory.c

···
 		return 1;
 
 	/*
-	 * The trick starts.
-	 *
 	 * What we want to do is to check whether this page may
 	 * have been pinned by the parent process.  If so,
 	 * instead of wrprotect the pte on both sides, we copy
···
 	 * the pinned page won't be randomly replaced in the
 	 * future.
 	 *
-	 * To achieve this, we do the following:
-	 *
-	 * 1. Write-protect the pte if it's writable.  This is
-	 *    to protect concurrent write fast-gup with
-	 *    FOLL_PIN, so that we'll fail the fast-gup with
-	 *    the write bit removed.
-	 *
-	 * 2. Check page_maybe_dma_pinned() to see whether this
-	 *    page may have been pinned.
-	 *
-	 * The order of these steps is important to serialize
-	 * against the fast-gup code (gup_pte_range()) on the
-	 * pte check and try_grab_compound_head(), so that
-	 * we'll make sure either we'll capture that fast-gup
-	 * so we'll copy the pinned page here, or we'll fail
-	 * that fast-gup.
-	 *
-	 * NOTE! Even if we don't end up copying the page,
-	 * we won't undo this wrprotect(), because the normal
-	 * reference copy will need it anyway.
-	 */
-	if (pte_write(pte))
-		ptep_set_wrprotect(src_mm, addr, src_pte);
-
-	/*
-	 * These are the "normally we can just copy by reference"
-	 * checks.
+	 * The page pinning checks are just "has this mm ever
+	 * seen pinning", along with the (inexact) check of
+	 * the page count. That might give false positives for
+	 * for pinning, but it will work correctly.
 	 */
 	if (likely(!atomic_read(&src_mm->has_pinned)))
 		return 1;
 	if (likely(!page_maybe_dma_pinned(page)))
 		return 1;
-
-	/*
-	 * Uhhuh. It looks like the page might be a pinned page,
-	 * and we actually need to copy it. Now we can set the
-	 * source pte back to being writable.
-	 */
-	if (pte_write(pte))
-		set_pte_at(src_mm, addr, src_pte, pte);
 
 	new_page = *prealloc;
 	if (!new_page)

net/bridge/br_netlink.c

···
 			  u32 filter_mask, const struct net_device *dev)
 {
 	u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
+	struct nlattr *af = NULL;
 	struct net_bridge *br;
 	struct ifinfomsg *hdr;
 	struct nlmsghdr *nlh;
···
 		nla_nest_end(skb, nest);
 	}
 
+	if (filter_mask & (RTEXT_FILTER_BRVLAN |
+			   RTEXT_FILTER_BRVLAN_COMPRESSED |
+			   RTEXT_FILTER_MRP)) {
+		af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
+		if (!af)
+			goto nla_put_failure;
+	}
+
 	/* Check if  the VID information is requested */
 	if ((filter_mask & RTEXT_FILTER_BRVLAN) ||
 	    (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) {
 		struct net_bridge_vlan_group *vg;
-		struct nlattr *af;
 		int err;
 
 		/* RCU needed because of the VLAN locking rules (rcu || rtnl) */
···
 			rcu_read_unlock();
 			goto done;
 		}
-		af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
-		if (!af) {
-			rcu_read_unlock();
-			goto nla_put_failure;
-		}
 		if (filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)
 			err = br_fill_ifvlaninfo_compressed(skb, vg);
 		else
···
 		rcu_read_unlock();
 		if (err)
 			goto nla_put_failure;
-
-		nla_nest_end(skb, af);
 	}
 
 	if (filter_mask & RTEXT_FILTER_MRP) {
-		struct nlattr *af;
 		int err;
 
 		if (!br_mrp_enabled(br) || port)
 			goto done;
-
-		af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
-		if (!af)
-			goto nla_put_failure;
 
 		rcu_read_lock();
 		err = br_mrp_fill_info(skb, br);
···
 
 		if (err)
 			goto nla_put_failure;
-
-		nla_nest_end(skb, af);
 	}
 
 done:
+	if (af)
+		nla_nest_end(skb, af);
 	nlmsg_end(skb, nlh);
 	return 0;
 

net/core/filter.c

···
 
 BPF_CALL_1(bpf_skc_to_tcp_timewait_sock, struct sock *, sk)
 {
+	/* BTF types for tcp_timewait_sock and inet_timewait_sock are not
+	 * generated if CONFIG_INET=n. Trigger an explicit generation here.
+	 */
+	BTF_TYPE_EMIT(struct inet_timewait_sock);
+	BTF_TYPE_EMIT(struct tcp_timewait_sock);
+
 #ifdef CONFIG_INET
 	if (sk && sk->sk_prot == &tcp_prot && sk->sk_state == TCP_TIME_WAIT)
 		return (unsigned long)sk;

net/ipv4/tcp_ipv4.c

···
 
 	__skb_pull(skb, hdrlen);
 	if (skb_try_coalesce(tail, skb, &fragstolen, &delta)) {
-		thtail->window = th->window;
-
 		TCP_SKB_CB(tail)->end_seq = TCP_SKB_CB(skb)->end_seq;
 
-		if (after(TCP_SKB_CB(skb)->ack_seq, TCP_SKB_CB(tail)->ack_seq))
+		if (likely(!before(TCP_SKB_CB(skb)->ack_seq, TCP_SKB_CB(tail)->ack_seq))) {
 			TCP_SKB_CB(tail)->ack_seq = TCP_SKB_CB(skb)->ack_seq;
+			thtail->window = th->window;
+		}
 
 		/* We have to update both TCP_SKB_CB(tail)->tcp_flags and
 		 * thtail->fin, so that the fast path in tcp_rcv_established()

net/mptcp/options.c

···
 static void mptcp_write_data_fin(struct mptcp_subflow_context *subflow,
 				 struct sk_buff *skb, struct mptcp_ext *ext)
 {
-	u64 data_fin_tx_seq = READ_ONCE(mptcp_sk(subflow->conn)->write_seq);
+	/* The write_seq value has already been incremented, so the actual
+	 * sequence number for the DATA_FIN is one less.
+	 */
+	u64 data_fin_tx_seq = READ_ONCE(mptcp_sk(subflow->conn)->write_seq) - 1;
 
 	if (!ext->use_map || !skb->len) {
 		/* RFC6824 requires a DSS mapping with specific values
···
 		ext->data_fin = 1;
 		ext->use_map = 1;
 		ext->dsn64 = 1;
-		/* The write_seq value has already been incremented, so
-		 * the actual sequence number for the DATA_FIN is one less.
-		 */
-		ext->data_seq = data_fin_tx_seq - 1;
+		ext->data_seq = data_fin_tx_seq;
 		ext->subflow_seq = 0;
 		ext->data_len = 1;
 	} else if (ext->data_seq + ext->data_len == data_fin_tx_seq) {

net/mptcp/subflow.c

···
 				return MAPPING_DATA_FIN;
 			}
 		} else {
-			u64 data_fin_seq = mpext->data_seq + data_len;
+			u64 data_fin_seq = mpext->data_seq + data_len - 1;
 
 			/* If mpext->data_seq is a 32-bit value, data_fin_seq
 			 * must also be limited to 32 bits.

net/openvswitch/conntrack.c

···
 	}
 	err = ovs_ct_nat_execute(skb, ct, ctinfo, &info->range, maniptype);
 
-	if (err == NF_ACCEPT &&
-	    ct->status & IPS_SRC_NAT && ct->status & IPS_DST_NAT) {
-		if (maniptype == NF_NAT_MANIP_SRC)
-			maniptype = NF_NAT_MANIP_DST;
-		else
-			maniptype = NF_NAT_MANIP_SRC;
+	if (err == NF_ACCEPT && ct->status & IPS_DST_NAT) {
+		if (ct->status & IPS_SRC_NAT) {
+			if (maniptype == NF_NAT_MANIP_SRC)
+				maniptype = NF_NAT_MANIP_DST;
+			else
+				maniptype = NF_NAT_MANIP_SRC;
 
-		err = ovs_ct_nat_execute(skb, ct, ctinfo, &info->range,
-					 maniptype);
+			err = ovs_ct_nat_execute(skb, ct, ctinfo, &info->range,
+						 maniptype);
+		} else if (CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL) {
+			err = ovs_ct_nat_execute(skb, ct, ctinfo, NULL,
+						 NF_NAT_MANIP_SRC);
+		}
 	}
 
 	/* Mark NAT done if successful and update the flow key. */

net/qrtr/ns.c

···
 	struct qrtr_server *srv;
 	struct qrtr_node *node;
 	void __rcu **slot;
-	int ret = 0;
+	int ret;
 
 	node = node_get(qrtr_ns.local_node);
 	if (!node)
···
 	/* Announce the list of servers registered in this node */
 	radix_tree_for_each_slot(slot, &node->servers, &iter, 0) {
 		srv = radix_tree_deref_slot(slot);
+		if (!srv)
+			continue;
+		if (radix_tree_deref_retry(srv)) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
+		slot = radix_tree_iter_resume(slot, &iter);
+		rcu_read_unlock();
 
 		ret = service_announce_new(sq, srv);
 		if (ret < 0) {
 			pr_err("failed to announce new service\n");
-			goto err_out;
+			return ret;
 		}
+
+		rcu_read_lock();
 	}
 
-err_out:
 	rcu_read_unlock();
 
-	return ret;
+	return 0;
 }
 
 static struct qrtr_server *server_add(unsigned int service,
···
 	struct qrtr_node *node;
 	void __rcu **slot;
 	struct kvec iv;
-	int ret = 0;
+	int ret;
 
 	iv.iov_base = &pkt;
 	iv.iov_len = sizeof(pkt);
···
 	/* Advertise removal of this client to all servers of remote node */
 	radix_tree_for_each_slot(slot, &node->servers, &iter, 0) {
 		srv = radix_tree_deref_slot(slot);
+		if (!srv)
+			continue;
+		if (radix_tree_deref_retry(srv)) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
+		slot = radix_tree_iter_resume(slot, &iter);
+		rcu_read_unlock();
 		server_del(node, srv->port);
+		rcu_read_lock();
 	}
 	rcu_read_unlock();
 
···
 	rcu_read_lock();
 	radix_tree_for_each_slot(slot, &local_node->servers, &iter, 0) {
 		srv = radix_tree_deref_slot(slot);
+		if (!srv)
+			continue;
+		if (radix_tree_deref_retry(srv)) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
+		slot = radix_tree_iter_resume(slot, &iter);
+		rcu_read_unlock();
 
 		sq.sq_family = AF_QIPCRTR;
 		sq.sq_node = srv->node;
···
 		ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
 		if (ret < 0) {
 			pr_err("failed to send bye cmd\n");
-			goto err_out;
+			return ret;
 		}
+		rcu_read_lock();
 	}
 
-err_out:
 	rcu_read_unlock();
 
-	return ret;
+	return 0;
 }
 
 static int ctrl_cmd_del_client(struct sockaddr_qrtr *from,
···
 	struct list_head *li;
 	void __rcu **slot;
 	struct kvec iv;
-	int ret = 0;
+	int ret;
 
 	iv.iov_base = &pkt;
 	iv.iov_len = sizeof(pkt);
···
 	rcu_read_lock();
 	radix_tree_for_each_slot(slot, &local_node->servers, &iter, 0) {
 		srv = radix_tree_deref_slot(slot);
+		if (!srv)
+			continue;
+		if (radix_tree_deref_retry(srv)) {
+			slot = radix_tree_iter_retry(&iter);
+			continue;
+		}
+		slot = radix_tree_iter_resume(slot, &iter);
+		rcu_read_unlock();
 
 		sq.sq_family = AF_QIPCRTR;
 		sq.sq_node = srv->node;
···
 		ret = kernel_sendmsg(qrtr_ns.sock, &msg, &iv, 1, sizeof(pkt));
 		if (ret < 0) {
 			pr_err("failed to send del client cmd\n");
-			goto err_out;
+			return ret;
 		}
+		rcu_read_lock();
 	}
 
-err_out:
 	rcu_read_unlock();
 
-	return ret;
+	return 0;
 }
 
 static int ctrl_cmd_new_server(struct sockaddr_qrtr *from,
···
 	rcu_read_lock();
 	radix_tree_for_each_slot(node_slot, &nodes, &node_iter, 0) {
 		node = radix_tree_deref_slot(node_slot);
+		if (!node)
+			continue;
+		if (radix_tree_deref_retry(node)) {
+			node_slot = radix_tree_iter_retry(&node_iter);
+			continue;
+		}
+		node_slot = radix_tree_iter_resume(node_slot, &node_iter);
 
 		radix_tree_for_each_slot(srv_slot, &node->servers,
 					 &srv_iter, 0) {
 			struct qrtr_server *srv;
 
 			srv = radix_tree_deref_slot(srv_slot);
+			if (!srv)
+				continue;
+			if (radix_tree_deref_retry(srv)) {
+				srv_slot = radix_tree_iter_retry(&srv_iter);
+				continue;
+			}
+
 			if (!server_match(srv, &filter))
 				continue;
 
+			srv_slot = radix_tree_iter_resume(srv_slot, &srv_iter);
+
+			rcu_read_unlock();
 			lookup_notify(from, srv, true);
+			rcu_read_lock();
 		}
 	}
 	rcu_read_unlock();

net/rxrpc/ar-internal.h

···
 	RXRPC_CALL_CLIENT_RECV_REPLY,	/* - client receiving reply phase */
 	RXRPC_CALL_SERVER_PREALLOC,	/* - service preallocation */
 	RXRPC_CALL_SERVER_SECURING,	/* - server securing request connection */
-	RXRPC_CALL_SERVER_ACCEPTING,	/* - server accepting request */
 	RXRPC_CALL_SERVER_RECV_REQUEST,	/* - server receiving request */
 	RXRPC_CALL_SERVER_ACK_REQUEST,	/* - server pending ACK of request */
 	RXRPC_CALL_SERVER_SEND_REPLY,	/* - server sending reply */
···
 enum rxrpc_command {
 	RXRPC_CMD_SEND_DATA,		/* send data message */
 	RXRPC_CMD_SEND_ABORT,		/* request abort generation */
-	RXRPC_CMD_ACCEPT,		/* [server] accept incoming call */
 	RXRPC_CMD_REJECT_BUSY,		/* [server] reject a call as busy */
+	RXRPC_CMD_CHARGE_ACCEPT,	/* [server] charge accept preallocation */
 };
 
 struct rxrpc_call_params {
···
 					   struct rxrpc_sock *,
 					   struct sk_buff *);
 void rxrpc_accept_incoming_calls(struct rxrpc_local *);
-struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *, unsigned long,
-				     rxrpc_notify_rx_t);
-int rxrpc_reject_call(struct rxrpc_sock *);
+int rxrpc_user_charge_accept(struct rxrpc_sock *, unsigned long);
 
 /*
  * call_event.c

net/rxrpc/call_accept.c

···
 				      unsigned int debug_id)
 {
 	const void *here = __builtin_return_address(0);
-	struct rxrpc_call *call;
+	struct rxrpc_call *call, *xcall;
 	struct rxrpc_net *rxnet = rxrpc_net(sock_net(&rx->sk));
+	struct rb_node *parent, **pp;
 	int max, tmp;
 	unsigned int size = RXRPC_BACKLOG_MAX;
 	unsigned int head, tail, call_head, call_tail;
···
 	}
 
 	/* Now it gets complicated, because calls get registered with the
-	 * socket here, particularly if a user ID is preassigned by the user.
+	 * socket here, with a user ID preassigned by the user.
 	 */
 	call = rxrpc_alloc_call(rx, gfp, debug_id);
 	if (!call)
···
 			 here, (const void *)user_call_ID);
 
 	write_lock(&rx->call_lock);
+
+	/* Check the user ID isn't already in use */
+	pp = &rx->calls.rb_node;
+	parent = NULL;
+	while (*pp) {
+		parent = *pp;
+		xcall = rb_entry(parent, struct rxrpc_call, sock_node);
+		if (user_call_ID < xcall->user_call_ID)
+			pp = &(*pp)->rb_left;
+		else if (user_call_ID > xcall->user_call_ID)
+			pp = &(*pp)->rb_right;
+		else
+			goto id_in_use;
+	}
+
+	call->user_call_ID = user_call_ID;
+	call->notify_rx = notify_rx;
 	if (user_attach_call) {
-		struct rxrpc_call *xcall;
-		struct rb_node *parent, **pp;
-
-		/* Check the user ID isn't already in use */
-		pp = &rx->calls.rb_node;
-		parent = NULL;
-		while (*pp) {
-			parent = *pp;
-			xcall = rb_entry(parent, struct rxrpc_call, sock_node);
-			if (user_call_ID < xcall->user_call_ID)
-				pp = &(*pp)->rb_left;
-			else if (user_call_ID > xcall->user_call_ID)
-				pp = &(*pp)->rb_right;
-			else
-				goto id_in_use;
-		}
-
-		call->user_call_ID = user_call_ID;
-		call->notify_rx = notify_rx;
 		rxrpc_get_call(call, rxrpc_call_got_kernel);
 		user_attach_call(call, user_call_ID);
-		rxrpc_get_call(call, rxrpc_call_got_userid);
-		rb_link_node(&call->sock_node, parent, pp);
-		rb_insert_color(&call->sock_node, &rx->calls);
-		set_bit(RXRPC_CALL_HAS_USERID, &call->flags);
 	}
+
+	rxrpc_get_call(call, rxrpc_call_got_userid);
+	rb_link_node(&call->sock_node, parent, pp);
+	rb_insert_color(&call->sock_node, &rx->calls);
+	set_bit(RXRPC_CALL_HAS_USERID, &call->flags);
 
 	list_add(&call->sock_link, &rx->sock_calls);
 
···
 }
 
 /*
- * Preallocate sufficient service connections, calls and peers to cover the
- * entire backlog of a socket.  When a new call comes in, if we don't have
- * sufficient of each available, the call gets rejected as busy or ignored.
- *
- * The backlog is replenished when a connection is accepted or rejected.
+ * Allocate the preallocation buffers for incoming service calls.  These must
+ * be charged manually.
  */
 int rxrpc_service_prealloc(struct rxrpc_sock *rx, gfp_t gfp)
 {
···
 			return -ENOMEM;
 		rx->backlog = b;
 	}
-
-	if (rx->discard_new_call)
-		return 0;
-
-	while (rxrpc_service_prealloc_one(rx, b, NULL, NULL, 0, gfp,
-					  atomic_inc_return(&rxrpc_debug_id)) == 0)
-		;
 
 	return 0;
 }
···
 	rxrpc_see_call(call);
 	call->conn = conn;
 	call->security = conn->security;
+	call->security_ix = conn->security_ix;
 	call->peer = rxrpc_get_peer(conn->params.peer);
 	call->cong_cwnd = call->peer->cong_cwnd;
 	return call;
···
 
 	if (rx->notify_new_call)
 		rx->notify_new_call(&rx->sk, call, call->user_call_ID);
-	else
-		sk_acceptq_added(&rx->sk);
 
 	spin_lock(&conn->state_lock);
 	switch (conn->state) {
···
 
 	case RXRPC_CONN_SERVICE:
 		write_lock(&call->state_lock);
-		if (call->state < RXRPC_CALL_COMPLETE) {
-			if (rx->discard_new_call)
-				call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
-			else
-				call->state = RXRPC_CALL_SERVER_ACCEPTING;
-		}
+		if (call->state < RXRPC_CALL_COMPLETE)
+			call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
 		write_unlock(&call->state_lock);
 		break;
 
···
 
 	rxrpc_send_ping(call, skb);
 
-	if (call->state == RXRPC_CALL_SERVER_ACCEPTING)
-		rxrpc_notify_socket(call);
-
 	/* We have to discard the prealloc queue's ref here and rely on a
 	 * combination of the RCU read lock and refs held either by the socket
 	 * (recvmsg queue, to-be-accepted queue or user ID tree) or the kernel
···
 }
 
 /*
- * handle acceptance of a call by userspace
- * - assign the user call ID to the call at the front of the queue
- * - called with the socket locked.
+ * Charge up socket with preallocated calls, attaching user call IDs.
  */
-struct rxrpc_call *rxrpc_accept_call(struct rxrpc_sock *rx,
-				     unsigned long user_call_ID,
-				     rxrpc_notify_rx_t notify_rx)
-	__releases(&rx->sk.sk_lock.slock)
-	__acquires(call->user_mutex)
+int rxrpc_user_charge_accept(struct rxrpc_sock *rx, unsigned long user_call_ID)
 {
-	struct rxrpc_call *call;
-	struct rb_node *parent, **pp;
-	int ret;
+	struct rxrpc_backlog *b = rx->backlog;
 
-	_enter(",%lx", user_call_ID);
+	if (rx->sk.sk_state == RXRPC_CLOSE)
+		return -ESHUTDOWN;
 
-	ASSERT(!irqs_disabled());
-
-	write_lock(&rx->call_lock);
-
-	if (list_empty(&rx->to_be_accepted)) {
-		write_unlock(&rx->call_lock);
-		release_sock(&rx->sk);
-		kleave(" = -ENODATA [empty]");
-		return ERR_PTR(-ENODATA);
-	}
-
-	/* check the user ID isn't already in use */
-	pp = &rx->calls.rb_node;
-	parent = NULL;
-	while (*pp) {
-		parent = *pp;
-		call = rb_entry(parent, struct rxrpc_call, sock_node);
-
-		if (user_call_ID < call->user_call_ID)
-			pp = &(*pp)->rb_left;
-		else if (user_call_ID > call->user_call_ID)
-			pp = &(*pp)->rb_right;
-		else
-			goto id_in_use;
-	}
-
-	/* Dequeue the first call and check it's still valid.  We gain
-	 * responsibility for the queue's reference.
-	 */
-	call = list_entry(rx->to_be_accepted.next,
-			  struct rxrpc_call, accept_link);
-	write_unlock(&rx->call_lock);
-
-	/* We need to gain the mutex from the interrupt handler without
-	 * upsetting lockdep, so we have to release it there and take it here.
-	 * We are, however, still holding the socket lock, so other accepts
-	 * must wait for us and no one can add the user ID behind our backs.
-	 */
-	if (mutex_lock_interruptible(&call->user_mutex) < 0) {
-		release_sock(&rx->sk);
-		kleave(" = -ERESTARTSYS");
-		return ERR_PTR(-ERESTARTSYS);
-	}
-
-	write_lock(&rx->call_lock);
-	list_del_init(&call->accept_link);
-	sk_acceptq_removed(&rx->sk);
-	rxrpc_see_call(call);
-
-	/* Find the user ID insertion point. */
-	pp = &rx->calls.rb_node;
-	parent = NULL;
-	while (*pp) {
-		parent = *pp;
-		call = rb_entry(parent, struct rxrpc_call, sock_node);
-
-		if (user_call_ID < call->user_call_ID)
-			pp = &(*pp)->rb_left;
-		else if (user_call_ID > call->user_call_ID)
-			pp = &(*pp)->rb_right;
-		else
-			BUG();
-	}
-
-	write_lock_bh(&call->state_lock);
-	switch (call->state) {
-	case RXRPC_CALL_SERVER_ACCEPTING:
-		call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
-		break;
-	case RXRPC_CALL_COMPLETE:
-		ret = call->error;
-		goto out_release;
-	default:
-		BUG();
-	}
-
-	/* formalise the acceptance */
-	call->notify_rx = notify_rx;
-	call->user_call_ID = user_call_ID;
-	rxrpc_get_call(call, rxrpc_call_got_userid);
-	rb_link_node(&call->sock_node, parent, pp);
-	rb_insert_color(&call->sock_node, &rx->calls);
-	if (test_and_set_bit(RXRPC_CALL_HAS_USERID, &call->flags))
-		BUG();
-
-	write_unlock_bh(&call->state_lock);
-	write_unlock(&rx->call_lock);
-	rxrpc_notify_socket(call);
-	rxrpc_service_prealloc(rx, GFP_KERNEL);
-	release_sock(&rx->sk);
-	_leave(" = %p{%d}", call, call->debug_id);
-	return call;
-
-out_release:
-	_debug("release %p", call);
-	write_unlock_bh(&call->state_lock);
-	write_unlock(&rx->call_lock);
-	rxrpc_release_call(rx, call);
-	rxrpc_put_call(call, rxrpc_call_put);
-	goto out;
-
-id_in_use:
-	ret = -EBADSLT;
-	write_unlock(&rx->call_lock);
-out:
-	rxrpc_service_prealloc(rx, GFP_KERNEL);
-	release_sock(&rx->sk);
-	_leave(" = %d", ret);
-	return ERR_PTR(ret);
-}
-
-/*
- * Handle rejection of a call by userspace
- * - reject the call at the front of the queue
- */
-int rxrpc_reject_call(struct rxrpc_sock *rx)
-{
-	struct rxrpc_call *call;
-	bool abort = false;
-	int ret;
-
-	_enter("");
-
-	ASSERT(!irqs_disabled());
-
-	write_lock(&rx->call_lock);
-
-	if (list_empty(&rx->to_be_accepted)) {
-		write_unlock(&rx->call_lock);
-		return -ENODATA;
-	}
-
-	/* Dequeue the first call and check it's still valid.  We gain
-	 * responsibility for the queue's reference.
-	 */
-	call = list_entry(rx->to_be_accepted.next,
-			  struct rxrpc_call, accept_link);
-	list_del_init(&call->accept_link);
-	sk_acceptq_removed(&rx->sk);
-	rxrpc_see_call(call);
-
-	write_lock_bh(&call->state_lock);
-	switch (call->state) {
-	case RXRPC_CALL_SERVER_ACCEPTING:
-		__rxrpc_abort_call("REJ", call, 1, RX_USER_ABORT, -ECONNABORTED);
-		abort = true;
-		fallthrough;
-	case RXRPC_CALL_COMPLETE:
-		ret = call->error;
-		goto out_discard;
-	default:
-		BUG();
-	}
-
-out_discard:
-	write_unlock_bh(&call->state_lock);
-	write_unlock(&rx->call_lock);
-	if (abort) {
-		rxrpc_send_abort_packet(call);
-		rxrpc_release_call(rx, call);
-		rxrpc_put_call(call, rxrpc_call_put);
-	}
-	rxrpc_service_prealloc(rx, GFP_KERNEL);
-	_leave(" = %d", ret);
-	return ret;
+	return rxrpc_service_prealloc_one(rx, b, NULL, NULL, user_call_ID,
+					  GFP_KERNEL,
+					  atomic_inc_return(&rxrpc_debug_id));
 }
 
 /*

net/rxrpc/call_object.c

···
 	[RXRPC_CALL_CLIENT_RECV_REPLY]		= "ClRcvRpl",
 	[RXRPC_CALL_SERVER_PREALLOC]		= "SvPrealc",
 	[RXRPC_CALL_SERVER_SECURING]		= "SvSecure",
-	[RXRPC_CALL_SERVER_ACCEPTING]		= "SvAccept",
 	[RXRPC_CALL_SERVER_RECV_REQUEST]	= "SvRcvReq",
 	[RXRPC_CALL_SERVER_ACK_REQUEST]		= "SvAckReq",
 	[RXRPC_CALL_SERVER_SEND_REPLY]		= "SvSndRpl",
···
 	call->call_id		= sp->hdr.callNumber;
 	call->service_id	= sp->hdr.serviceId;
 	call->cid		= sp->hdr.cid;
-	call->state		= RXRPC_CALL_SERVER_ACCEPTING;
-	if (sp->hdr.securityIndex > 0)
-		call->state	= RXRPC_CALL_SERVER_SECURING;
+	call->state		= RXRPC_CALL_SERVER_SECURING;
 	call->cong_tstamp	= skb->tstamp;
 
 	/* Set the channel for this call.  We don't get channel_lock as we're

net/rxrpc/conn_event.c

···
 	if (call) {
 		write_lock_bh(&call->state_lock);
 		if (call->state == RXRPC_CALL_SERVER_SECURING) {
-			call->state = RXRPC_CALL_SERVER_ACCEPTING;
+			call->state = RXRPC_CALL_SERVER_RECV_REQUEST;
 			rxrpc_notify_socket(call);
 		}
 		write_unlock_bh(&call->state_lock);
···
 			return ret;
 
 		spin_lock(&conn->bundle->channel_lock);
-		spin_lock(&conn->state_lock);
+		spin_lock_bh(&conn->state_lock);
 
 		if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) {
 			conn->state = RXRPC_CONN_SERVICE;
-			spin_unlock(&conn->state_lock);
+			spin_unlock_bh(&conn->state_lock);
 			for (loop = 0; loop < RXRPC_MAXCALLS; loop++)
 				rxrpc_call_is_secure(
 					rcu_dereference_protected(
 						conn->channels[loop].call,
 						lockdep_is_held(&conn->bundle->channel_lock)));
 		} else {
-			spin_unlock(&conn->state_lock);
+			spin_unlock_bh(&conn->state_lock);
 		}
 
 		spin_unlock(&conn->bundle->channel_lock);

net/rxrpc/key.c

···
 
 	_enter("");
 
-	if (optlen <= 0 || optlen > PAGE_SIZE - 1)
+	if (optlen <= 0 || optlen > PAGE_SIZE - 1 || rx->securities)
 		return -EINVAL;
 
 	description = memdup_sockptr_nul(optval, optlen);
···
 	if (IS_ERR(description))
 		return PTR_ERR(description);
 
-	key = request_key_net(&key_type_keyring, description, sock_net(&rx->sk), NULL);
+	key = request_key(&key_type_keyring, description, NULL);
 	if (IS_ERR(key)) {
 		kfree(description);
 		_leave(" = %ld", PTR_ERR(key));
···
 
 		switch (token->security_index) {
 		case RXRPC_SECURITY_RXKAD:
-			toksize += 9 * 4;	/* viceid, kvno, key*2 + len, begin,
+			toksize += 8 * 4;	/* viceid, kvno, key*2, begin,
 						 * end, primary, tktlen */
 			toksize += RND(token->kad->ticket_len);
 			break;
···
 			break;
 
 		default: /* we have a ticket we can't encode */
-			BUG();
+			pr_err("Unsupported key token type (%u)\n",
+			       token->security_index);
 			continue;
 		}
 
···
 	do {								\
 		u32 _l = (l);						\
 		ENCODE(l);						\
+		memcpy(xdr, (s), _l);					\
+		if (_l & 3)						\
+			memcpy((u8 *)xdr + _l, &zero, 4 - (_l & 3));	\
+		xdr += (_l + 3) >> 2;					\
+	} while(0)
+#define ENCODE_BYTES(l, s)						\
+	do {								\
+		u32 _l = (l);						\
 		memcpy(xdr, (s), _l);					\
 		if (_l & 3)						\
 			memcpy((u8 *)xdr + _l, &zero, 4 - (_l & 3));	\
···
 		case RXRPC_SECURITY_RXKAD:
 			ENCODE(token->kad->vice_id);
 			ENCODE(token->kad->kvno);
-			ENCODE_DATA(8, token->kad->session_key);
+			ENCODE_BYTES(8, token->kad->session_key);
 			ENCODE(token->kad->start);
 			ENCODE(token->kad->expiry);
 			ENCODE(token->kad->primary_flag);
···
 			break;
 
 		default:
-			BUG();
 			break;
 		}
 

net/rxrpc/recvmsg.c

···
 }
 
 /*
- * Pass back notification of a new call.  The call is added to the
- * to-be-accepted list.  This means that the next call to be accepted might not
- * be the last call seen awaiting acceptance, but unless we leave this on the
- * front of the queue and block all other messages until someone gives us a
- * user_ID for it, there's not a lot we can do.
- */
-static int rxrpc_recvmsg_new_call(struct rxrpc_sock *rx,
-				  struct rxrpc_call *call,
-				  struct msghdr *msg, int flags)
-{
-	int tmp = 0, ret;
-
-	ret = put_cmsg(msg, SOL_RXRPC, RXRPC_NEW_CALL, 0, &tmp);
-
-	if (ret == 0 && !(flags & MSG_PEEK)) {
-		_debug("to be accepted");
-		write_lock_bh(&rx->recvmsg_lock);
-		list_del_init(&call->recvmsg_link);
-		write_unlock_bh(&rx->recvmsg_lock);
-
-		rxrpc_get_call(call, rxrpc_call_got);
-		write_lock(&rx->call_lock);
-		list_add_tail(&call->accept_link, &rx->to_be_accepted);
-		write_unlock(&rx->call_lock);
-	}
-
-	trace_rxrpc_recvmsg(call, rxrpc_recvmsg_to_be_accepted, 1, 0, 0, ret);
-	return ret;
-}
-
-/*
  * End the packet reception phase.
  */
 static void rxrpc_end_rx_phase(struct rxrpc_call *call, rxrpc_serial_t serial)
···
 	}
 
 	switch (READ_ONCE(call->state)) {
-	case RXRPC_CALL_SERVER_ACCEPTING:
-		ret = rxrpc_recvmsg_new_call(rx, call, msg, flags);
-		break;
 	case RXRPC_CALL_CLIENT_RECV_REPLY:
 	case RXRPC_CALL_SERVER_RECV_REQUEST:
 	case RXRPC_CALL_SERVER_ACK_REQUEST:
···
 	       call->debug_id, rxrpc_call_states[call->state],
 	       iov_iter_count(iter), want_more);
 
-	ASSERTCMP(call->state, !=, RXRPC_CALL_SERVER_ACCEPTING);
+	ASSERTCMP(call->state, !=, RXRPC_CALL_SERVER_SECURING);
 
 	mutex_lock(&call->user_mutex);
 

net/rxrpc/sendmsg.c

···
 				return -EINVAL;
 			break;
 
-		case RXRPC_ACCEPT:
+		case RXRPC_CHARGE_ACCEPT:
 			if (p->command != RXRPC_CMD_SEND_DATA)
 				return -EINVAL;
-			p->command = RXRPC_CMD_ACCEPT;
+			p->command = RXRPC_CMD_CHARGE_ACCEPT;
 			if (len != 0)
 				return -EINVAL;
 			break;
···
 	if (ret < 0)
 		goto error_release_sock;
 
-	if (p.command == RXRPC_CMD_ACCEPT) {
+	if (p.command == RXRPC_CMD_CHARGE_ACCEPT) {
 		ret = -EINVAL;
 		if (rx->sk.sk_state != RXRPC_SERVER_LISTENING)
 			goto error_release_sock;
-		call = rxrpc_accept_call(rx, p.call.user_call_ID, NULL);
-		/* The socket is now unlocked. */
-		if (IS_ERR(call))
-			return PTR_ERR(call);
-		ret = 0;
-		goto out_put_unlock;
+		ret = rxrpc_user_charge_accept(rx, p.call.user_call_ID);
+		goto error_release_sock;
 	}
 
 	call = rxrpc_find_call_by_user_ID(rx, p.call.user_call_ID);
···
 		case RXRPC_CALL_CLIENT_AWAIT_CONN:
 		case RXRPC_CALL_SERVER_PREALLOC:
 		case RXRPC_CALL_SERVER_SECURING:
-		case RXRPC_CALL_SERVER_ACCEPTING:
 			rxrpc_put_call(call, rxrpc_call_put);
 			ret = -EBUSY;
 			goto error_release_sock;

net/sctp/auth.c

···
 out_err:
 	/* Clean up any successful allocations */
 	sctp_auth_destroy_hmacs(ep->auth_hmacs);
+	ep->auth_hmacs = NULL;
 	return -ENOMEM;
 }
 

net/wireless/nl80211.c

···
 	if (err)
 		return err;
 
+	if (key.idx < 0)
+		return -EINVAL;
+
 	if (info->attrs[NL80211_ATTR_MAC])
 		mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);